The worst part he killed his father over a lie. A trick of a Sith Lord. And somehow Leia and Luke never mentioned Anakin’s redemption and somehow Hayden Anakin never appeared to him as a force ghost to set him straight. Its plenty convenient.
The reason I actually like Anakin the ghost not appearing to Kylo is because the ST is perhaps accidentally in line with the theory that Force Ghosts only appear to those who knew the person in life.