The credits theory falls apart pretty quickly, as they’d need to cross out the name of every other actor who ends up dead—from Pai Mei to Buck.

I think that’s a safe assumption. Hollyhock doesn’t need anything from BoJack any more but still wants him to be a part of her life. The best thing he can do for her is listen and be a cautionary warning should she notice any similar traits in herself.

I love this kind of humor. It's clean, you can watch it with your kids w/o having to explain all of the jokes, and it's not at the expense of someone else's feelings. And it makes people smile and laugh.