I’ve been using Mint as my daily driver and gaming PC for years. Very happy with it.
If you’re really on the fence, and you’re building a new system, you might just want to “distro hop” for the first week or so. It’s a little work and a bit disruptive, as you’ll be re-installing the OS every few days. But just like a car, there’s nothing like actually driving it to get a feel for how much you’ll like it.
As someone on Mastodon wisely pointed out: There aren’t enough Linux gamers to invest resources in supporting them properly, but there are enough using it to cheat to actively block them?