it's not that bad. if your build heavily relied on vulnerable dmg you might have a problem, but otherwise it's still fun. of course the new season didn't add anything of substance when it comes to endgame content, but that was communicated beforehand. the helltide problem was/is a bug that they're working on and they already acknowledged that they messed up a bit, because they made the game less fun for a lot of people and nerfing almost everything under the sun is never a good option (they literally said that there is never going to be a patch like this ever again). 1.1.1 is already in the works with more tabs for inventory, easier nightmare dungeons and an xp boost to get from level 50 to 100 faster.
check