They were in a toxic relationship; they were both awful to each other. Relationships that are codependent but awful for each other are common, and this one was just televised.
Yes Amber did shit to Johnny, but he did shit back at her.
I think people using him as an example of "see? men can be victims too!!!" but no one was questioning that in the first place, of course, men can be victims; I just think Amber was just as a victim as he was in an abusive, toxic, codependent relationship.
I feel like another important question is, do either of them deserve redemption?