I haven't bought the DLC myself so take this with a grain of salt but from everything I've seen, this DLC's bosses are largely very very bloodborne-esque, even more so than the base game's more aggressive bosses.
Thing is, this game isn't bloodborne, it doesn't have a true rally system. That system is what made BB work so well in regards to aggressive enemies. The issue I've had with some main game bosses and what seems to be carried over but worse in the DLC is that most of the boss fight is just waiting for the boss to finish their 30-60 second anime bullshit wombo-combo that'll curb stomp you if you even get glanced by it, to get 1-2 swings in yourself before it does another dumbass combo. You can't afford to be overly aggressive like in BB because your HP recovery is way more finite than in that game.
Rate me dumb, call it a skill issue, but I don't think soft-forcing a player into a certain build/playstyle is something that should be aspired to in the souls/rings games. It works for Armored Core, leave it there. I miss the days of DS1, 2 and to a lesser extent 3 where not only different builds but different play styles were as viable as one another. Be it more aggressive dodgeroll glass cannon or defensive damage sponge tanking.