Completely disagree. I loved the comics and Hackman as Luthor. He gave the character a personality, something he never had in the comics. What’s wrong with a megalomaniac who has a dry sense of humor?
First, changing him from being essentially a mad scientist to a businessman type is just wrong. Second, while he hated being bald, he never covered it up with a wig. Third, he was never a dandy. Fourth, while he was crazy implausible, he wasn’t 1966 Batman crazy implausible.
Sinking California to make money off of Nevada real estate is too small a fish for a super genius like Luthor.