I think that the only legitimate complaint about the disc collector market comes from the people who would really LIKE to throw CE/PFN/11x/whatever older run discs because they grew up throwing that stuff and they want replacements for their aging throwers, but they can't afford to buy them anymore (or more likely they don't WANT to pay the asking prices for throwers). I can get that; I've been there.
I have a single 2013 AJ Tour Series Star Teebird that's been in my bag since 2013 and recently I've noticed it's not quite as OS as it once was, so I went looking for a backup/replacement. The AJ Tour Series are more OS than standard Star Teebirds, and I'd rather have a Star than a Champ disc in that slot (more OS than standard Star, but less so than my 2013 Brinster). So I started bidding on DDGA auctions for them (which is a fool's game, but oh well). During the last auction, the person bidding me up commented with his bid something like "What a beauty, I'll add it to my stack of these." With my next bid, I commented that I was just looking for a thrower to replacement my single aging thrower, and he was kind enough to let me win the auction after that (which was good because I wasn't going any higher). I'm sure the sell wished I'd kept my big mouth shut, but it didn't really matter because I wasn't going to pay any more than that anyway.
However, I've been on the selling side of the market way more than the buying side and made way more money selling older discs to collectors than I've spent replacing my throwers, so I really don't have a leg to stand on when it comes to complaining about the market (so I usually don't). I can see how there are occasions where one might complain about it, but I don't think my case was the typical transaction. I don't think the majority of people buying/selling collectible discs aren't in my sort of situation. Honestly though, the next time this comes around and I have the same problem, I won't buy paying whatever the asking prices are for 2013 AJ Tour Series Teebirds because they'll probably be like $60 by then. I'll just move on and find something else for that slot, which will be fine. Everyone has to move on and throw something new at some point; it's just a question of when.