isn't it canon that Clark is only able to have sex with women because of advanced Jor-El training that was probably awkward as fuck?

My only reaction to this is an urgent and prevailing desire to beat my head against a wall until I forget that I ever read it.

yet he kills anyone who sees him,

As opposed to the good old days when he used to just condemn them to a horrid fate in Belle Reve.

And didn't they already do the clone a Luthor sibling plotline in s7 with Julian?

THis show is a crime against my sanity. I choose to remember Lionel as the magnificent bastard who wanted to give Lex a good spanking.