So this has happened to me a few times now. I have a LOT of people on my watch list, so I don't comment a whole lot, unless someone is posting a topic I have a particular interest in. If someone puts up a poll on such a topic and requests feedback I sometimes do so, only to have my opinions ripped apart as though I am a blithering idiot for doing exactly what was asked of me.
Thankfully, online mediums like DA offer ready access to block lists, but it still seems to be an odd trend.