It definitely isn't. I've been a huge linux nerd since my preteens in the late 2000s, I jumped on to squeeze more performance out of the thoroughly mediocre hardware I had access to. I wanted to program, and I found Visual Studio to be incomprehensibly dense and confusing, while Linux tools were so much simpler, with GCC, GEdit, makefiles and the like being more to my liking. I fell deep into the rabbit hole, learned emacs, then vim (it was more responsive on my intel atom-powered netbook), became a "shell guru", eventually went to college at 16 and started doing cybersecurity work/pentesting professionally. I've even made a tiny contribution to the Linux kernel, which I'm pretty proud of.

All this anecdata to say, I consider myself pretty okay at using Linux, I "prefer" Linux, but I don't use Linux for gaming. Not unless it makes sense. I play Minecraft on Linux, and FOSS games that were developed on Linux. There's a POWER9 desktop on my desk that runs Linux, and all my professional and hobby work goes there. I love it.

But any commercial games? They go on my old college-days Intel desktop, running Win10. I can do the work to get games running on Linux, but why bother? Like Linus says in that video, when I have time to play video games, I really don't want to pull out a debugger and strace and crap to do more $DAYJOB work.

Not to say I never do that for fun. I do. I've done some work with https://github.com/ptitSeb/box86, and that involves a similar process. But I just frankly don't find doing it to your average Steam game to be very fun. Sometimes the muse strikes, usually it doesn't.

And for your average Linux user, much less your average computer user overall, you can forget about it. IMO, unless you have a strong ideological reason to only use FOSS OSes (and all the power to you!), the reason you use Linux is because it's a vastly superior tool for certain problems.

Playing your average commercial game is not one of them.