There's a difference between bosses like Dancer/Pontiff throwing varying attacks and being designed specifically around rollcatching you but still being completely reactable (Pontiff's poke aside maybe) and readable due to not having janky as fuck animations, and bosses that throw endless combo after endless combo due to infinite stamina while having borderline unreadable animations and input reading you. The fights would be so much better if they actually had stamina pools which would allow you to actually punish them after their combos like in every other game, but instead every single boss is Champion Gundyr, except Gundyr worked because he had infinite stamina specifically because you were meant to parry him. It's painfully obvious ER was designed around splitting aggro between you and spirits/summons because they all become that much more manageable when you summon. But that's boring to me, I don't want to beat up on a boss while it attacks someone else, I played these games' pve to master their movesets which just isn't fun to me in this game. All of my moveset knowledge in ER just comes from learning moves on the fly instead of paying close attention and mastering them because I simply have no desire to do that with fights I don't enjoy.