I’m using endeavourOS with Nvidia 4090 with proprietary drivers and it works fine for most games without tinkering. For issues with Linux gaming you can check protonDB. Steam, lutris and heroic game launchers are doing wonders for a big portion of the gaming options on Linux. I wouldn’t change the 3080 with AMD if I were you.

A couple years ago I read that Filecoin has teamed up with the internet archive to synchronize the data on the Blockchain. I’m not sure how far they are yet, but it’s something that could work if it doesn’t turn out to be just crypto hype in the end.