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That's fine, it's obvious nobody wants support for newer cards from AMD. ...
Almost everyone's advice is, get an Apple M-machine, because they are so much faster etc.
Although the AS Mac Pro doesn't get much love either, because it has PCI-E slots.
Still people spend money to have their Mac Studios upgraded with larger SSD kits (3rd party), because they can get it for a lower price. (See the kickstarter campaign.) I guess they would go all in if they could upgrade the memory as well. As long as they don't have to pay Apple for the privilege.
Personally, I will keep my intel macs as long as possible. Not least because I am concerned about the biometrics combined with Apple's focus on AI. And I don't find Microsoft any better. So I am not switching to Microsoft Windows.
But this is off topic in this thread, so I apologise