Hardly superficial when it completely eliminates the problem. This has all be covered in the other 30 pages of this thread you obviously haven't read.
I have read some of them, they kind-a seem to repeat. I also have existed for a while, and been through many dietary trends. I remember the days when fats were bad! Now they are... kind-a good? Definitely better than sugar.
I think you may have missed my point in one of my posts, let me re-iterate:
A diet is a personal choice; maybe a vegetarian diet is right for you! And that is great, between your physiology and your mentality it works well. Good for you. On a personal level, it does not work for me. I have tried multiple diets over the past few decades and come down to the one that really works well for me. It is a balance of vegies, meat, and a little grain. It is a VERY sustainable diet... but more importantly, it is what my body needs to feel good and function well.
To give a possible middle ground. Going vegan doesn't eliminate the damage of too many humans. It appears to reduce it by about 70% give or take. So I wouldn't call it "completely eliminating" the problem.
But a 70% reduction is really nothing to sneeze at. At that point and with other changes, it is very possible that 10 billion can be done sustainably. I think we can all agree that 10 billion people eating a US like diet is not sustainable.
And there are really 2 issues - quantity and meat focus. The most egregious thing is to eat more than you need and since we are running about 70% of US adults are overweight, we really need to work on that.
Pesticides is a very foolish argument in favor of meat consumption. The really only rational argument is that you like to eat meat.
Even if you feel that plants have feelings and we should ethically only eat as few as possible, you should eat them directly rather than the inefficient process of feeding them to an intermediary and then eating that intermediary. If you think meat protein is cheap (and therefore efficient), please price out protein from dry beans/lentils or soy. In bulk you can buy black beans at about $1.50 a pound which has 100 grams of protein - which is more than the average person needs in a day. The calories would be a bit light but rice is pretty cheap also. $.50 could easily fill that need.
Now, you don't want to live on rice and beans. I get it. And for that, you want to make some argument that ethically you should eat steak?
Of course humans are not best served by eating rice and beans. But the primary essential nutrients of protein, carbs and fiber needs are met. Sure, you do need a tiny amount of oil (and you don't need the carbs) but that is so small to be a rounding error on destruction of the environment. Obviously, there is some fruit and vegetable consumption no matter how you get your protein and calories. And you should source those as locally as possible which I suspect any environmental vegan would do.
Waiting until everything can be grown in a lab to do the right thing is a rather selfish, self-serving viewpoint.
Interesting middle ground, seems like you are in strong support of one side! No problem though, I appreciate a logical perspective.
I am not sure of your point and where 70% comes from. 70% of what? Overweight Americans? I am confused.
The "American Diet" is a strange one... we are known for fast food, and eating tons of sugar. Agreed, it would be great if it went away. I am not a fan. that said, until the food industry changes and fast food isn't cheaper/easier to get than good food it isn't going anywhere and is spreading quickly through the world.
Interesting that you mention overweight Americans. So, globally, we account for roughly 4% of the population. Many statistics like to point out that we, ~4-5% of the planet consume 24% of the energy... which is not just food... that statistic, while food is part of it (we consume about double the caloric intake of other modern countries) includes things like electricity and fossil fuels. let's stay out of that rabbit hole as that introduces another debate.
Bottom line: protein doesn't make you fat. American obesity is not a factor for this discussion.
Pesticides are not an argument to eat meat, it is an argument against the morality of veganism.
Again, regarding plants, you are missing the point. It was an argument against the morality of veganism. Again, I would like to cite Dr. Tyson and his book "Starry Messenger". Check it out, he has some good ideas/concepts in there.
The cost we are referring to here is not fiscal, it is environmental.
Your "rice and beans" argument is interesting, but I disagree (I think, if I get your point)- it is ethical to eat steak. Also pork, chicken, snake, moose, bison... I think verbiage matters here, try this one: (my declarative statement) It is ethical to raise/slaughter livestock. Try not to make declarative statements with a subject that is the reader. Makes things less... aggressively personal? Trust me, it works better. My desires to eat meat or not are not relevant to what is ethical for society, and I don't think you meant to place my feelings in that kind of regard. Try out your own such as "it is unethical to raise/slaughter livestock" and please, share some rational for your stance.
Your statement about carbs is incorrect for some individuals. Some can't live keto. Physiology matters, and dietary needs are different.
Most vegans I know shop at Whole Foods... there isn't enough local supply. While ideal, local supply to support populations isn't feasible or even allowed in some areas (HOAs, county laws, etc). We can't all raise chickens or have an extensive garden for a backyard. Farmer's markets are known to be infiltrated with non-local produce so... we are kind-a stuck. It is a nice idea, but like the whole world going vegetarian; it is a pipe-dream.
I am puzzled by the statement you made, "waiting for technological change" (paraphrasing) is selfish and self-serving. So, panicking is more noble? How about presenting and pushing unrealistic ideas? I would argue that those are more "selfish" as promoting such ideas gives a person a feeling moral superiority. Those of us that have faith in more intelligent people with a passion for (insert issue here) will solve the problem is faith in humanity which I would argue is the opposite of self-serving. Maybe that is you! or the OP! If so; good on you, solve the world's food issues. those of us that are busy with other issues thank you for it.
May have missed it... where is your middle ground exactly?