Nvidia on Linux is better than ever before, even over the past couple of months there were tremendous improvements. As long as you use X11 you will have a pretty good gaming experience across the board, but Nvidia driver updates are often a headache. With AMD, you don’t even have to think about it, unless Davinci Resolve forces you to, but even then it’s a better situation.

Anyway, comments like “you’ll be 100% fine” are not really based on reality, occasionally Nvidia will break things. However if you use the BTRFS filesystem with Timeshift (or even that wretched Snapper) set up, then this is merely a minor inconvenience. (for example before I moved to Arch, Ubuntu pushed an Nvidia update that broke my system, happened in June…)