Raedric's Hold is a side area, and perfectly skipable, as in It's not part of the critical path to finish the main quest. I do agree that it's not fun to lose progress, if a player happens to wonder in and get stuck and maybe lose some progress, if he completes the quest, gets stuck and has to restore from a suitable save or restart, but that doesn't mean the game is unplayable. And leaves something to experience on the next playthrough
The other stuff - not working passives and permanent stat increases, again, not fun, but not bringing the game to a state that's unplayable. It's a single player game, after all, not a problem. If someone wants to glitch his character/s to godhood, they're welcome - and btw, to get to this part, as far as I understand it, you had to deliberately go out of your way to get there.
On the general, I tend to agree with you, but still think you over exaggerate how unplayable the state of the game is/was without the patch. Could have been much worse.
Makes me wonder though what would people find to whine about next. I can't say that everything major being patched all of a sudden will stop the complaints.
