There actually isn't any locking involved. I can take a new, officially unsupported version of ROCm and just use it with my 7900 XT despite my card not being officially supported and it works. It's just that AMD doesn't feel that they need to invest the resources to run their test suite against my card and bless it as officially supported. And maybe if I was doing something other than running PyTorch I'd run into bugs. But it's just laziness, not malice.