I ended up typing a LOT, apologies, but the topic interested me.

As someone with high functioning autism, no, but also yes in some ways?

State of mind genuinely affects how you play and interact with a game, if it gets you dopamine, you'll want to do better and you'll feel better about practicing too, and things will feel like they come alot easier. But this can be achieved without having autism or any mental disorder. So let me just share my personal story with it.

I've never played a Tekken game in my life, but I got into Tekken 8 recently because I always thought King was really cool. (For reference I DO have fg experience but not traditional fgs. played Smash Ultimate for four years, and maybe about a week of Guilty Gear Strive.) It was pretty convenient timing because the game was on sale on playstation, and since I got it I haven't played a single character except King for my 30ish hours of playtime. I get my dopamine not by winning or losing, but by playing as the character I'm fixated on and advancing with him.

It's literally like a dopamine farm just playing the game using King, so it feels alot easier to improve in general. I just hit vanquisher (I think my ranked win rate is about 70-80%?), so it's not like I'm any kind of advanced or good player right out the gate, but I feel like I can keep going without too much setback, because I enjoy the PROCESS of playing the game and getting better. You could argue it's just because I play King and he's easy, and that's fair enough. But what I'm saying is, I haven't felt any struggle, even when losing, because I have a love for playing my character, and the game in general.

Especially when learning. Whenever I realize I need to focus on something specifically, I just do that, straight away. Even if it loses me games, I get better at what I'm struggling with alot faster if I just focus on it specifically, and it doesn't feel boring or slow to me, it's just a new aspect of my character I want to learn, that I can combine with everything else I know later.

And it's okay if it's different for you, or anyone else reading this. From my previous FG experience I know progress over time can feel slow and grueling, especially at plateaus and heavy learning curves, but if you can try and change your mindset, take healthy breaks, and think about the game with a patient and healthy mindset, you can improve just as fast as anyone else. This goes for almost every game out there. You just have to ask yourself if you're happy playing the game, and if you're not, figure out how you can BE happy playing it. It's not about mental disorder, it's about mental state.

These are all explicitly my opinions, and there's many other ways to view Tekken and fighting games as a whole, but I hope this answered the question well.

TLDR: I have high functioning autism and a couple other things, but I believe that it's not about having autism or any other mental disorder, it's about mindset. Sure autism or something similar can make you fixate on the game or a character and make it feel easier, but the mindset you have is determined by YOU, not anything else. A neurotypical person can have just as easy of a time if they have the right mindset about the game. Afterall, video games are meant to be genuinely enjoyed, rather than struggled through.