Excluding the latest generation gpu, i.e. the 4xxx that passionate gamers will buy at exorbitant prices, no miner will buy cards at the current time in the uncertainty of the date of transition of eth from pow to pos and perhaps the medium-power and not recent gpus will return as before at decent prices
You'd be surprised... Some people don't actually believe the ETH 2.0 date and are still buying cards. I'm personally waiting to see what intel brings to the table along with the 4XXX series. Might consider buying then, but I also think they will be scalped.
I can see some of their reasoning was PoS is something bad, that it will drive down the ETH price and will be sort of 'last resort' for devs. I really don't think so. The thing is, PoW ain't really the main drive for ETH's anymore since the trend of green and saving energy, reduces the CO2 emission. Worst, with energy cost going so high around the global, especially in European with heating problems, depend on Russia's natural gas, etc. A lot of people start to see PoW as an outdated model. Also getting ires from gamers, driving the price of GPU up which in need in the auto-driving car industry or automation systems.
Looks at the CMC and see how many coins in the #10 or even #20 were mineable PoW? "Why the fk those coins didn't have our glorious PoW system but still at the top, driving the price on their own?" you ask. It was because PoW isn't important as it used to be, only the two behemoths are BTC and ETH which thanks to them was the OG. ETH 2.0 will go on track and isn't a bad thing. What we have now is Q3/Q4 for the merge and maybe another quarter for PoS official at the block. So around 8 months +-3 and this is applying pressure on the graphics card market. Not to mention the intel jump into making the graphics card, shipping at Q3 this year, new series of graphics cards from AMD and nvidia, AV1 support hardware,... I can only see the pressure for the graphics cards to drive the price down, not the other way around.