The biggest issue I have is with devs releasing games for full price in early access then to never finish it (like ksp2) or just spam it with new content instead of fixing bugs (like Ark). In most cases it's not the player base treating it like it's a finished game, it's the devs selling it as a nearly finished game (while it's not even at a playtesting state) then to move on onto a new project as soon as sales drop leaving it unfinished, scamming the players.
Steam early access became an excuse to release unfinished junk. The sport for devs is to create content which is a bit over 2 hours, so it's past the refund period. Think of long loading screens, unskippable intro videos and conversations, long waiting time for connecting to servers etc, extremily long unskippable instructions during the mandatory tutorial, so the actual crappy gameplay won't be seen within the first 2 hours.
There are also devs that do try and mean well, they usually sell the game at a discount in early access to compensate the player base for bug testing for them (like ksp1).
Sadly the majority are just scammers.
How does Steam even allow paid DLC content for an early access game... Wtf.