Might be a translation error. "Mad" in the US isn't considered the opposite of smart. It is the opposite of "peaceful" or "sane". You're original title implied that AI proponents are either insane or in a rage. (Or both)
"Mad" is nice, because it's "insane" or "rage," so it's really an accusation (which was my intention). But yes, I agree, it isn't the opposite of "smart."