Why didn't Anakin's force ghost come and tell Ren that the dark side isn't cool anymore?
he's talking, i assume, about the old white guy as anakins force ghost.
at least one does, sort of, canonically
Although Yoda says that it isn't a force ghost but an "illusion" of the "dead"
Maybe he hasn't revealed to Kylo who he truly is and yes I agree he doesn't look like that old man Vader from RotJ and it would be fucking retarded which makes me believe it's true even more so.