I switched from Nvidia for amd for the same reason: “and is better on Linux”.
In my experience you are just making different tradeoffs. I use pop so your mileage may vary but Nvidia was easy to use and upgrade. It’s not nearly as bad as people let on.
AMD on the other hand isn’t as seamless as people let on. And the open source drivers, while awesome, don’t let you take advantage of the codecs for video streaming or even alot of the AI ML stuff, so you switch to the proprietary drivers and they are slightly buggy.
I wish I kept my 3070ti over the 6900xt.
Unless they figure out a way to let me use av1 or rocm more easily then my next card will be Nvidia again.