The lack of knowledge about the other two items I mentioned are also reasons people stopped playing the game. If you don't know them, the game becomes an incredible drag. Even I would have quit if I didn't know about meditation.
The fact that the game would start all over each time made me think I hadn't progressed enough to save the game. And because the first time round, the timer doesn't really begin until you leave space, I thought I would have to do all the training (jetpack, etc) each time. I remember being very frustrated - I had spent well over an hour playing it and it didn't even save the game?
And felt the same thing the second time round.
Then I abandoned the game for about a year. The only reason I returned to it was because I couldn't understand why so many would like such a game. So I finally searched online on how to save the game and ... oh, that's why.
As I said, look on various forums, and you'll see plenty of people quitting the game early because they didn't understand this. There's a whole thread on the subreddit on frustrations of players who recommended the game to friends - a significant percentage quit the game before they got to any of the interesting parts.
I think revealing this is a decent compromise to ensure people will actually play the game.
I played the game years ago and did not have this element spoiled, and I thought it was presented at exactly the right time and in the right way. I'd go so far as to say that if somebody is so frustrated by that early mystery (which you're all but guaranteed to understand better and better as you play) that they quit there, then the rest of the game will just be an exercise in misery. It's a puzzle game. The developers put settings in place to cut the flight mechanics out of it so people could just experience it as a puzzle box instead of a flight simulator as well. What they did NOT put in the game is a hint about the thing you're spoiling.
Please consider accepting what your critics are telling you, and remove the spoiler.
I do have some sympathy for the frustration. I don't think neurotype has anything to do with it. Struggling to phrase this in a non-spoilery way, but I think individual experience really depends on where they are in the game at the time of the reveal. I almost quit because of this as well - very glad I didn't.
This could be explained without spoilers though. Something like "There's a moment in the first few hours where you may want to quit. DON'T. Stick with it, I promise it's worth it."