You haven’t tried it recently. Every game I play works flawlessly and is just as good or you can’t tell vs windows. I’ve been back and forth for 20 years and now I’m 100% and have been since February. I love it, and I’m happy to have my OS be my OS and do what I want it to do.
Now, to be somewhat fair, I built my new PC with the plan to go Linux. I went team red and a single ultra wide monitor. I wasn’t sure about the single monitor at all at first but now, man I love it. I have it setup so when I hit the windows key I can pick a new desktop. The only thing I can’t do is watch video’s while I play games and it doesn’t bother me at all.
Seriously though, outside of work I kicked windows out of my house in 2020 and haven’t needed to go back. To be fair, my job doesn’t have any software requirements that would tether me to windows, but the gaming performance this year has been nearly flawless for the majority of my library, beyond anticheat some games actually run better on linux when you consider the reduced overhead in a lighter distro