Most significant difference is that Nobara updates muuch faster, so you’ll have a much more recent kernel and the freshest mesa graphics stack.
Upside is that more recent and/or AAA games will run better, downside is that you might to need to do some debugging if something breaks.
The US has never been a country that’s good or fair. It’s only very slowly gotten a little better through the sweat and blood of good people.
If we want it to get better it’s going to be a lot of difficult and painstaking work.