Well, Crota's End was badly designed. Bungie kept fireteams underleveled for it, which made it a gear check. Especially insta oversoul in HM was a dick move on top of that, I thought. The salt during Dark Below was real, lots of players quit the game. It wasn't much different from the complaints about Incursions currently. Also VoG was full of glitches and the random teleports caused lots of grief too (I applauded this, I was fucking sick of being the runner all the time).
Give it time, who knows players come up with proper builds to tackle those challenges quite effortlessly.
But I do have to say Massive seems to be in a bigger bind than Bungie ever did. The issues here are completely glaring, and they gave hardcore players a huge ass headstart which completely ruins the PvP. I was sort of slow, I became 30 after BK and PC was fixed. Then I was Challenge proof after Hornet was fixed. Missing these 2 exploits means I have much less materials which means the nerf hit me like a truck. It also means DZ leveling is more tedious as i'm consistently out geared. Destiny doesn't have a DZ, you could get the best weapons everywhere and the best gear from just Normal mode.