Grandpa Obi-Wan makes literally no sense.
At the core of Anakin's fall was Anakin falling in love, abandoning a major teaching of the Order, and a shit-ton of stuff that was directly caused by all that.
So, what, immediately after almost killing someone he considers to be his brother, after he directly contributed to the death of almost every Jedi and the subjugation of the galaxy, a stickler for the rules and a traditionalist says "awww, fuck it", and commits the exact same "sin" that started it all? What?
Plus, ok, his kid is just chillin' in space somewhere and is never mentioned... just cuz? Like never a "hey Luke, there's this force sensitive spawn of mine out there all alone" or some shit like that? And what, Luke just stumbles into them/their daughter years later? Or did Ghost Obi-Wan pop and be all like "You know how we told you that you and your sister were the lost hopes? Well, LOL I LIED. I had this chick on da side and we got a whole 'nother lineage up in this shit, who could have helped you out, but lul, dat shit dangerous yo! Thanks for making things all safe 'n shit."
The entire idea shits on Obi-Wan as a character and creates super stupid plot holes. BUT THEY'RE BOTH BRITISH AND USE JEDI MIND-TRICKS