I've installed linux (debian LTS with XFCE) on my mom's computer and she recently called me to thank me. She says her computer is much quieter now (meaning fewer notifications). She only needs a web browser and a text editor.

So you're right, it's great for power users, it's also great for other users.

Window management: only if you are the kind of power user who needs complex layout. I have used Windows for decades and have used Mac on and off, and have even bought one of those window management app on MacOS, but never needed to use them. In rare occasions where I need several windows open, side-by-side on each of dual screens is usually good enough, if not I probably am working in a terminal where I use tmux.

Gaming: that's a fact but again doesn't matter to most people. Most people play video games on phones/tablets/consoles if they play games at all. PC gaming is a relative minority, and (regular) Windows laptops can only do lightweight gaming anyway. The amount of people who decides what "everyday computer" they should buy based on whether they are going to play games on it is very small. Plus, you get much better ROI by buying a PS5+Macbook Air than spending the same amount of money on a gaming laptop.

you need a ton of third party tools to make it behave like Windows, that's what you mean.

I'm perfectly happy with my "vanilla" macbook. Runs Baldurs Gate 3 and my final fantasy ps2 emulator just fine, and even trackmania was quite easy to get installed and runs well.

Can't comment on that hash thing, but I don't see why that would be a problem? It's not linked to your name or something. Windows does a ton of things too that I find inexcusable, such as changing settings or permissions after updates, those have an actual impact on my daily experience with these things