There is a robust community around it but it is not very user friendly; most info is found in discord and a Google spreadsheet and custom patches/builds of uvr
My only interest is if there are any newer, cleaner algorithms/models. htdemucs (as well as everything else in UVR) are good but not great and leave a lot of artifacts. The acapellas it stamps are 'good enough' til you get to final mixdown and then the flaws stand out real heavy.
The stem models were getting better and better, but stopped dead right around when GPTs started to work.