I made no moral accusations and I threatened no social rejection. I pointed out your bias. I did it with strong words; maybe I should apologize for that; I'm an orator, I don't usually run in specifically "rationalist" circles, and I'm used to a different kind of conversation.

In terms of discouraging discussion, here's what I think discourages discussion:

1) Any request for ideas that implies that people who have some experience with the matter at hand are "perverts" -- this insults and scares off people who could contribute to your discussion.

2) The implication that telling people they're being judgmental is the same as "threatening people with social rejection" or "making moral accusations" -- this tells potential commenters that if they call you out on your bias, you'll refuse to listen because you feel so hurt that someone called you biased.