I've got it working a couple of times. In my opinion they need to fix documentation, make flakes an officially supported thing and take it out of beta that it's been in for years so that documentation can be further created, and the installer should work on a majority of devices out of the box.

My laptop was the worse experience. I just wanted KDE and Firefox. I don't use it for much. But, KDE wouldn't load so I had to go into CLI and edit the configuration.nix and change some stuff to get it to work. It's a thinkpad that has official support for Linux. So, it was specifically a nix driver issue. I just installed Arch again and went on like normal. I would love to trust it with a server. But, I just can't.