Probably so they thought it would circumvent insults and other wily rhetoric from those emotionally sensitive on this subject ... and yet, going by your own use of "idiot" on a website enabling otherwise intelligent discussions, it would seem that was futile consideration on OP's part.
Yes, they being a doctor matters because it is a filter for someone who engages with scientific material and their opinion is more valued than some rando crackpot.
That said, what are your credentials? Perhaps I'm enganging some rando crackpot myself.