Really not good enough from AMD. I wonder if Intel wasn’t a complete dumpster fire right now if they would still cut off the fix at Zen 3 (I doubt it). There’s really no reason not to issue a fix for these other than they don’t want to pay the engineers for the time to do it, and they think it won’t cost them any reputational damage.
I hate that every product and company sucks so hard these days.
You may know this already from the Steam Deck, but I highly recommend installing protonup-qt which will enable you to install the glorious eggroll versions of Proton. A lot of game cutscenes don’t work with vanilla proton but will with ProtonGE.