I'm not entirely convinced about that. We'll see when a more generalized desktop distro comes along and gains traction with gamers. So far, Linux hasn't really made the jump from the Steam Deck to the desktop. I haven't seen a mass migration of gamers from Windows to Linux yet. As long as Windows offers even a marginally better experience, I don't think it'll happen anytime soon.
Additionally, there are still many types of software that either don't run on Linux or don't perform as well. I primarily use my PC for music production, and that pretty much rules out using Linux unless I'm willing to spend more time configuring things or risk potential compatibility issues.
I do wish I could switch to a Linux desktop without feeling like a second-class citizen in certain areas. I prefer writing web applications on Linux, but with WSL working well enough, I’m too lazy to dual boot just for that.
That said, I'm looking forward to installing Arch on my old laptop. I may be an adult with a full-time job, kids, and little free time, but I'm still a nerd at heart.