In the same way that I have to think about how to respond and think about why you have a negative reaction to what I wrote, I also have to struggle with a reasonable way of communicating why I think you don't understand what I wrote.
I think the point that you're missing from my post is: I don't think anybody actually says that guitar hero is like playing a guitar so I'm confused about where this idea comes from (that people think practicing guitar hero will productively lead to being able to play that). I just don't understand where that seemingly rigid argument comes from because I've not met a single person who actually believes that.
The only people who are saying that way are people who have negative feelings towards the game in the context of music. To me, that's pretentiousness because it assumes the thoughts of the people who play the game. It reminds me of people talking shit about Chicago who've never been to Chicago.
But ultimately I think my point is that people are going to flail, but we shouldn't immediately assume that people don't get anything out of them. You seem to have an absolute position that it's all or nothing -- surely you don't actually think you've learned NOTHING from playing Fallout? Nothing about yourself? Nothing about game mechanics? There's much more to learn than what's "formally" presented and each person gets something different.
Like, I've been playing with cipher mechanisms with LLMs... and after getting frustrated with all that, I'm now learning how to draw so that I can make my own similar cryptographic puzzles. Wouldn't have gotten there if I hadn't stumbled blindly for a bit. So in the same way that you wouldn't invalidate my path towards music, I'd hope you wouldn't invalidate my path towards drawing. There's a middle point somewhere in between that you seem hesitant to intellectually venture towards.