Perhaps and if thats the case ok but then we shouldn't pretend he actually has motivation. If it boils down to "well hes just insane" then its entirely fair to say he had no real motivation as to why he hates superman.
Google The Problem of Evil and Epicurus's Trilemma. At the end of the day you're complaining about Lex having an irrational hatred of Superman. So just like the comic then. Guess why they always have lex's motivations based on Superman thwarting his real estate plans in other films.