I don't think it was that different. Dean even admitted he was jealous of Hank in how he isn't held back by the self doubts he has. Dean basically doesn't want to become like Rusty but he is becoming him by rebelling against him. We are basically seeing Dean change into a more selfish person and that whole bedside confession and hurting Hank was Dean realizing that.
Hank isn't normal and I don't think will ever be normal. That was part of the joke at the end of the season. He was static and going nowhere last season for sure while being obsessed with his relationship, but in the finale he realized it and decided to move on with his life by jumping into that dream lake. That was him moving forward, but that is to become "The Bat" which isn't normal which is in character for him.
I just can't imagine Hank ever going down a normal path. And before they started writing Hank as being super obsessive he and Serina had good chemistry the season prior, but in half an episode Hank seemingly moved on already from learning she fucked Dean and hopefully he is over it next season while trying to do whatever ridiculous thing next.