yep, I wouldn’t want to buy an OLED display second hand without a visual inspection or an iron-clad return policy. However I feel like there is quite a bit of value in OLED TVs to be had out there these days because OLEDs have been around for a while, people might be upgrading and others feel just as apprehensive about used displays. So if you have the time and opportunity to pick one up personally, it might be a great deal
I haven’t tried using an OLED TV for anything other than big screen viewing of video or games, where text clarity is a non-issue