Goodness, does it ever.

But my problem was that the group put me in a box. Nobody wanted to know my level of education, just if I read this or that book on communism.

It is a totally fair reason not to engage in argument. It's just... How can I put it...? Just because I didn't read a book, I can't be knowledgable on a subject?

My guesses are that your community is so exposed to bad faith arguments, so you cannot give everyone the time of day. I haven't gone back to reread the thread, but you can probably see how I was basically backing into a corner through the whole thread.