It's garbage for most of the same reasons D3 was garbage. The people that made the first two Diablo games had virtually nothing to do with the creation of the newer 2 and it shows. That love and care is gone for the series is gone. Blizzard is now Blizzard in name only, as they design their games around making as much money as possible for as little effort as possible. The producers are completely out of touch with what Diablo fans want and don't understand what made the first two games masterpieces.
The camera is too close, the dialogue is cheesy and lazily written, you hit a hard progression wall at about level 54, the monster levels scale, so your character never becomes the powerhouse you had to become in the first two games and the main story just feels like a never ending side quest.
Diablo 4 is garbage, like everything else this shell of a company now produces. Don't waste your time and money.