to be honest it's actually not that hard depending on what you do with your PC. If you want something you can set up once and forget about NixOS is perfect, put auto-updates and the stable channel and you will be able to forget about it for months, only having to occasionally edit your config file to switch to a new release. In fact I'd argue that if they manage to get a GUI package manager, and auto-update + auto-clean setup on installation, they'd probably be one of the best noob-friendly distros out there even.

The issue is that they sometimes tend to do big changes to how things are handled, documentation is sorely lacking and if you're a tinkerer (especially if you like ricing) you may have a harder time than regular distros. That said the convenience of having a list of all the programs you use in a single file is amazing and I hope every package manager adopts a similar declarative way of installing software.