Elaborating: I feel like they could have done what Kubrick did with A Clockwork Orange. That is Stanley Kubrick didn’t allow Alex to grow (he actually reverted) past his droogish ways. That made the movie great!

I feel like BoJack was who he was, not good nor bad, and it should have ended that way.

Him trying to grow/change is perhaps just a quick way to end the show on a happy note.