The bitcoin halvenings don't reduce supply or increase scarcity--admittedly I've been awake for 38 hours straight, and my logic might have grown some fuzz around the edges, but I don't see any relationship between that and what AMD is doing.

There's no scarcity of graphics cards in general, just the overpriced new ones that are being doled out at a rate that gives the impression of scarcity--but it's artificial of course.  And Jesus, I'm not a gamer but how much do you need out of a GPU anyway if you're not mining altcoins?  You can check eBay and see a whole bunch of very powerful GPUs that were selling for outrageous prices prior to September of last year, when ETH moved to PoS, but are now pretty much bargains.  I don't know how much of an improvement a 4080 or 7900 XT really is or why anyone would buy one at MSRP.  It's astonishing how the manufacturers are trying to hold onto the GPU boom that was due solely to ETH mining.

Those days are long gone and aren't coming back as far as I can tell.  AMD and NVIDIA better wake up and realize that.