I'm sorry that you're having troubles with the game.
I'm not sure why you're having troubles with the game on an RTX 3070. I have an older RTX 2060 6GB video card and it runs perfectly fine on it. (That's also the card I developed it on.) Maybe you're having some kind of a driver issue? I'm not too sure on that one. I do not believe it to be a very demanding game as far as graphics go.
There is no blue skateboard in the game. What you're referring to is a blue hoverboard that's inspired by the ones found in the movie Back to the Future 2. (It's a small easter egg because of my user name being McFlyGold) So, it's supposed to be floating. ;)
I'm curious about the switch not working. I haven't had any reported problems with it so far. I'll have to look into that to see if there's something wrong there on my end.
As far a a "death screen". When you "die", I think it's pretty obvious that you did something wrong in the game. I didn't feel the need to add the text "you died" on the screen. But I'm sorry that you think it looks "cheap".
Yes, some of the anomalies are obscure. That's intentional. The game was designed to make you try and pay attention to small details. In my opinion, if all the anomalies were obvious, the game would be too easy. AI was inspired by a few other games and they all have some anomalies that are difficult to notice unless you're paying attention.
I'm sorry that you did not enjoy the game. That's why I added a free demo for people to try out before buying the full game. Maybe this style of game doesn't fit your interests? Either way, I honestly do appreciate you taking the time to leave feedback on your experience.
-McFlyGold