My experience on HN is that there exists a small minority of users who might shout you down, but I've never seen or heard of a user being banned for discussing something like this in good faith.
I've seen it claimed, without substantiation, that anyone who argues against the fashionable position can't possibly be doing so "in good faith" - because the unfashionable position itself is declared to be a bad faith position.
We detached this subthread from https://news.ycombinator.com/item?id=14942874 and marked it off-topic.