Yes totally! I like Reddit because you can pick your own subreddits but even that can be flooded by ragebait/clickbait
Even so, reddit is a huge echo chamber. The moderation is completely opaque so if a subreddit moderator doesn't like something you've said they can remove it at will, and they often do. And the upvote system encourages groupthink. Votes being hidden on HN I think is excellent.
That's true of any real community in the physical world, too.
I'd go as far as saying that it's impossible to have fully inclusive and 100% objectively fair community that's also interesting, or even a community. It's not how humans operate, it's not what they want from a community, and even trying to enforce this "perfection" would require infinite resources feeding an omnipresent bureaucracy to moderate perfect order and compliance into people.