Exactly. And here I am, after 2 days of trying to bend NixOS to my will, and I gave up. Tomorrow, I'm going back to Fedora, where everything worked perfectly, because I fell for "Shiny thing sindrome", or the "grass is greener on the other side" stuff. Should have never doubted it. After 2 years of full time Linux and a lot of distrohopping, one would think I'd have known better.
Interesting how the numbers between "computer pros" and hobbyists (Steam Survey) diverge. Unsurprisingly for Steam gamers the Windows numbers are way higher but for Linux specifically Ubuntu is crashing hard since a few years from absolute domination to all Ubuntu versions + derivatives (Mint + pop_OS) combined barely making up 20% of the Linux user base whereas at Stack Overflow there's a clear lead of Ubuntu over the rest.
I think for games, people need newer kernels and drivers to support the newer hardware needed to play newer games, and they're willing to put up with the bugs that come along with thay. Ubuntu and Debian (stable) aren't strong at that by definition. I always use an older GPU that supported well by the Ubuntu LTS I run. If it doesn't play something, I'll wait till a new driver lands in that LTS or the next.
It is. It's a rolling release so it has the latest packages. It's not bleeding edge like arch. All software goes thru an automatic testing in OpenQA before they are allowed in the repo so there's some quality control. It's also very stable.