The developers knew about all the duplication bugs during beta and it took months to fix those, and then in response to players abusing it, they nerfed all the good legendary effects instead of just making content harder or releasing new weapons.
Player storage is a big issue in this game, the community begged for more storage since beta and the developers just used that as an opportunity to make money by implementing a subscription system for more storage.
Greed ruined this game, simple.