Once we set up rules on deciding on who is troll and who is not, given enough time, everybody can be seen as one. The thing is, the admin don't want to engage because no matter how retarded one's ideas are, some people might support him for the sake of supporting.

And if the admin bans the troll, then that act might be seen as a violation of free speech.

Then some people will argue against the ban and that will be seen as trolling as well. Then those supporters will get banned also.

That's what they do in other forums usually and I don't want to visit any forums that behave like that.

I think the current situation is fine. Let the crazy act crazy. Use the ignore button.