The problem is that driving is not a science, but more a personal experience, and highly subjective. People are taught to drive by someone else, usually a family member or friend, and those teachings are ingrained in them throughout their lives. What is slow acceleration to one person is "just right" for others, and even "aggressive" for others.
There are obviously basics of driving, legal requirements, that are universal. This includes, but isn't limited to: The car must stop at a red light or stop sign, and go on a green light, or when it's your turn at the intersection. You must stay in your lane, and signal when you need to change lanes. You must obey the posted speed limit. You cannot cross double-yellow lines.
The rest is subjective. How you reach the speed limit is entirely up to you. Some enjoy gunning it and getting to the limit as fast as possible. Some enjoy moderate acceleration, and others prefer a more leisurely ramp up. Some move as far to the right as possible before making a right turn, and some prefer to stay more in the center of the lane. Some corner fast, enjoying the g-forces and capabilities of their car. Others prefer to slow down and take the corner much more slowly. Some even have a pot of chili in the car they are taking to a pot-luck and need to take corners VERY SLOW.
Some people drive close to the lead car, because they don't want anyone cutting in front of them. Some like lots of room between them and the car ahead. Some are in a hurry and dart in and out of lanes in an effort to get ahead of traffic, while others prefer to stay in their lane and only change when necessary.
I view FSD Beta from the standpoint of capability. Does it follow the law, and do so safely? The subjective items I try to dismiss as if I was in an Uber and someone else was driving. So, it didn't accelerate as fast as I normally would. So, it took that corner a little faster than I would normally. Did it get me to where I wanted to go? Did it do it safely? That's all that really matters to me. But that's my personal experience.