See your problem is your failure to look at the issue objectively.
A rational and objective scale would look something more like this.
IQ 50-100 = Moronic Human who knows he is no genius
IQ 101-250 = Moronic Human with delusions of genius
What is more dangerous the moron who knows his limitations or the dilusional moron who thinks he is a genius?
many morons can be dangerous, they don't have to think usually someone else spreads some nonsense claim in order to make them hateful destructive zombies
regards