Rarely entirely serious. Fond of otters and dogs, scarily obsessive about music and old videogames. He/him.
A few things in this post are not accurate. The 5070 is supported by the nVidia Linux drivers since version 570.124.04. There’s also absolutely nothing wrong with using Ubuntu. They have a PPA for the newer nVidia drivers, which work fine with the current LTS release.
OP doesn’t say what kernel they’re running, or what version of Ubuntu. That would be useful information to have.
No real issues if you’re using X. Some troubles with Wayland, I’ve heard, but haven’t been able to test it personally. You might need to install the proprietary drivers if you want to play games, but that’s easy enough to do.
Depends what you’re talking about. If it’s something like Zorin OS, then yes, it’s fine. If you’re talking about switching from Fedora to RHEL, it’s a bit more complex.
FiiO make a pretty nice line of digital audio players.