For me the thing that pushed me to reinstall windows after I got a cheap $10 copy was Kerbal Space Program. Though, in my specific case I strongly suspect it was older hardware & driver issues than anything else, since I've not had any major problems on steam deck.

I do have more random crashes on certain games even on steam deck, but not as bad as Kerbal Space Program on my old (12 yr) desktop.

Factorio seems to work better on Linux. Which is both good and bad (since it's so addictive).