ds3 is all the same problems as 2 and then some. Its too linear, it has no original levels, it steals setpieces blatantly from the other games and does them poorly, it has almost no build variety because casters have been severely nerfed and str/dex quality scales too well.
The Yorhm fight is a pale immitation of storm king, The storm king fight has an enemy out of reach and a linear path that leads you to the weapon you're supposed to use. Yhorm on the other hand is an enemy you're perfectly capable of fighting on your own they just gave him too much hp. But because I saw an item in the arena and had played DeS I knew what they wanted of me.
Old monk is a similar flub, the old monk player couldnt heal but was given buffs this made for an asymetric duel. The old monk clone in 3 is an indaver+a boss, its not a fair fight at all in 1v1.
This video sums up ds3 as a whole pretty well.
https://youtube.com/watch?v=BNyuPLpVti8