For each Einstein there are a million cranks. Your opinion is, because one in a million does know what he's on about, we have to believe everyone?
No, that's not the point, the point is that "credentials" are not the be all and end all as was implied above. Who are these people, what have they published, etc. etc. There are plenty of published scientists that are nothing more than parasites making their reputation off the backs of their grad students and collegues. Yes, I put credence in credentials, but not to the point where I would out of hand discount an idea just because it wasn't put forth by someone with alphabet soup after their name.