You have a rather confused view of the world, and it's making you rather unhappy. You bought a car with software that is intended to be updated. That means it will change. You bought that, but you don't seem to understand what it means. Some things will get better and some will get worse over time. You don't get to choose and you get no control. If you don't like that, then don't buy such a product.
*SIGH* I do so love these defenses of the indefensible. You bought a car where the manufacture has the right remove safety features whenever they want, so deal with it. But, that isn't the case. ALL my products are upgradable, but one thing they all have in common is that I can undo an upgrade and/or have methods to reconfigure when necessary. I have never had the fundamental features of my computer/phone/tablet change, as Tesla has done with this update.
I'm quite sure the vast majority of Tesla owners don't care one way or the other. I doubt they could tell you what's different. Observing the complaints you see here tells you little about the wider world.
I am 100% sure you are wrong on this, based on the actual evidence. When you work in business, you learn to understand certain things. The fact that they have received thousands of calls over the past two weeks from people who are willing to sit on hold to up for 2 hours tells you this is a microcosm of what is actually going on, which is the majority of people are unhappy.. most just don't express it. Throw into that a sudden surge in people wanting to trade in their Teslas.. so much so that a local Lexus dealership wasn't interested in even discussing the trade in value, tells you exactly what is happening.
Meanwhile, Tesla is heading towards a world of full self driving.
That is 10 years away, at BEST. Anyone who thinks otherwise isn't paying attention to the realities of what that will take.
This whole question of what goes on the screen that isn't entertainment will become increasingly irrelevant. That's what they are concentrating on. And me, I'm kind of amazed to be observing the massive amounts of complaints from people saying that yesterday they were driving a car ten times better than any other car out there, but now it's degraded to only 9.99 times better and they sure are angry about it.
This is where you make your major mistake. Before the update, I had a car that had pros and cons, but the fact that it was full electric made it a better option. The car was lacking in MANY aspects vs its competition. It wasn't ever 10 times better than any other car out there. It was inferior to most other cars on the road in MANY ways. Terrible technology integration, as you still needed to use your phone for most functions that the car SHOULD be able to do. Large wait times for any service issue and god forbid you need body work done (we had to wait 4 weeks on a fender replacement when someone hit it). The mileage is not good, as a 5 mile trip will often eat 20 miles off the meter. Probably the worst visibility of any car on the road, unless you had the camera up on the center console, then it was actually better than most other cars.
What the Tesla had going for it was it was the ONLY Luxury full EV car. Other cars were FAR SUPERIOR on the technology integration front, but they were hybrids or gas cars. Other cars could compete on the EV front, but most of them had inferior range (90 miles on the Honda Clarity) OR gave up basic features (ie, manual seats in the Chevy Bolt). Our car also had free supercharging for life, which was nice, but not really necessary since we have free charging at home.
In short, the pros of the Tesla just outweighed the cons and now that has flipped because the con of the bad visibility has become a real problem.
I just saved spending hundreds of dollars on a dash cam! And the UI differences between the V8 and V9 on the S and X are inconsequential. In fact the UI differences between the 3 and the S are inconsequential. They're good enough. And they're all software so they're going to change, mostly for the better. Get used to it.
Not sure why you NEED a dash cam or where you could even spend "hundreds of dollars" on one. They cost $40 at Home Depot.
I am sorry you are stuck with a car that you have to apologize and make excuses for. The software changed drastically for the worse and the company is relying on people to leap to its defense, rather than address the problem, which is why they are losing customers.
