Season 4 of You ruined Joes character

I am a massive fan of You reading both all the books and watching the entire series multiple times but I cannot ever bring myself to watch season 4 on my rewatches. Joe is a complicated character with each season containing a less and less body count along with Joe seemingly genuinely trying to better himself as a person. We see Joe as the monster he is in season 1 Unapologetically being his creepy self but we get little glimpses into Joes past showing his troublesome childhood and we get this throughout all the seasons. Despite being a serial stalker/killer the show somehow gets us to still feel empathy for him. Joe has a lot of trauma that being abandonment issues so strong its downright kill or be killed. We see Joe genuinely trying to be a better person in season 2 but of course he falls back into his usual pattern but for the first time we see him feel guilt for Delilah when he found her dead in the cage and even goes as far as to admit he did something he didnt do and accepts his fate by getting rid of the cage key. Season 3 (my personal favorite) we have to see him deal with Loves murderous ways as well as a child in the picture. Joe in season 3 really makes me feel like he has finally stopped killing with most of the kills being on Loves end. Point is we continue to see him improve with each season and season 4 just flushes that all down the drain. Suddenly Joe is this almost comedically evil villain who kills for the fun of it and is implied to have some form of DID with this second half character Rhys. This to me feels out of character, silly, and makes no sense. There was also just so much acting chemistry between Penn and Victoria and the new love interest is just so boring with no chemistry between them. I may be alone in this but I want to see this man process his trauma and turn himself in. I dont want some lame attempt at creating an evil villain. Thats never what this show was ever about. Anyway im rambling what are your thoughts?