If by "serious damage" you mean convincing otherwise smart, normal people to believe in utter horseshit, then yes I agree.

I'm quite certain the world around us would be a better place if Alex just shut the fuck up, but no he has to use his "talents" to attract attention to himself instead of actually educate people.

He's not really a better person than Dick Cheney or Glenn Beck or anybody else who spews hatred and lies for a living.