That doesn't quite make sense, Hank is still a major part of the Ant-Man movies, despite Scott being the protagonist most everything that happens is because of Hank.
Hank's not even a domestic abuser though, he accidentally hit Janet once during a breakdown, a breakdown that at time she was using to manipulate him, so I don't see why that needs to shadow his character as if he was savagely beating her on a daily basis, why that needs to be the thing everyone emphasizes about him over his years of being a hero and putting his life on the line for other people.
Somehow this is treated as worse than creating Ultron for god's sake, it's ridiculous that people will not let man move on, but characters like Magneto get to be forgiven for the numerous atrocities he's committed.