Most of the time the fact there's a beginner-friendly option doesn't mean that there aren't also options for more advanced users. This is especially true with Linux.

On phones both Apple and Google lock things down so much that your options are limited. That's mostly an issue with monopolies not with phones. Macs have a bit more freedom than phones by default, Windows has a bit more than that, then you can go back to Mac if you're willing to hack around and run QT apps and so on. But, I can't imagine a Linux distro that didn't let you ditch a beginner-friendly UI for something more powerful.

I'm still hoping that the success of the Steam Deck will get the ball rolling. Steam Deck success might lead to more games that work really well under Linux. That means less of a reason to keep using Windows. More people using Linux might lead to more software being fully available for Linux, which might get more people to use it. I still think eventually you're going to need non-hobbyists to come in and smooth a lot of the rough edges. But, stage 1 in that whole process is getting more people using Linux, and maybe that's actually happening now.

(It also doesn't hurt that Microsoft keeps shooting themselves in the foot with things like the Cloudstrike bug, and the Windows Recall snoopware failure. Long may that continue.)