You may well be right, and what I'm told may be just sour grapes. And, the fact that I'm still here may well prove, it's more attitude than content which get's people thrown off the boat, so to speak.
My sense is you're absolutely right about that, BroJoeK. I've been around here ten-plus years now, and I can honestly say I don't recall anyone being banned from FR on the basis of posting content, but only for bad behavior in flagrant violation of the posting rules.
But then I also recognize that certain forms of posting content are themselves indicative of bad behavior; e.g., white supremacist screeds, or strident Holocaust denial would be examples. So perhaps the matter is not as straightforward as we could wish. JimRob has final discretion WRT such "hard cases" — as is his right, in justice.
But Coyoteman was not banned on the basis of any of his writings in "defense of science." Indeed, actually he wrote very little on that subject....