IMO Jedi never had a no sex law, that isn't part of the movies. Obi Wan is totally chill w Anakin and Padme (until things get weird). it seemed to be more a political thing, a la a congressperson sleeping with an intern or something. Anakin's fall wasn't because he fell in love, it was because he became so possessive of that love, the possession was his dark side Achilles heel, that same possession that enraged him into slaying Tuscan raiders after the death of his mother. his caring for those he loves was his biggest weak spot, for he became too emotionally entangled, and unable to control his naturally considerable powers.
the training age thing, it never bothered me. maybe Yoda is old school, the Jedi texts have a strict training regiment, he teaches those classes on his own dime, even tho Obi Wan is shown to be more liberal in his approach, starting with teaching a post-teen Luke in the very first movie. this is true of real religion, the followers approach the texts, dogma, etc. in different ways. religion is a living thing played out through it's adherents. the PT demonstrated this in a cool way by having Yoda, Obi Wan, Qui Gon, Mace Windu, etc. all have different, personal approaches. this is why they had Jedi councils at all, they didn't all think the same.
it is really stunning to think that Rey will KILL Kylo Ren like he killed Han Solo, but then she will FORCE JESUS him back to life. this is just universe breaking right here. forget Mary Sue, she is now Holy Mary, Mother of Christ. when Vader died Luke couldn't bring him back to life but now Holy Rey will heal thy Benjamin, wipe away those tears dear sweet child, sweet little genocidal baby.