I have to say, almost without fail these people are some of the most sour and impolite people I have come across. They have no hesitation in calling me all kinds of names from the beginning, and "naive" and "deluded" are just the start of it. I'm stupid and a fool and can't think for myself and all of that.
It's really off-putting and speaks very badly for their case, I think. I never, ever get that from more legitimate scientists. It's like these people just can't help insulting you because they seem to have no other case. I don't even know if they understand how much their impolite posture harms their potential case.
There's no reason people can't disagree without personally disagreeable. If you can't refrain from personal digs and insults, please do not write me.