Granted. They start posting opinions that are actually unpopular, but they keep being the intolerant and discriminatory subreddit that they have always been and start being too honest, writing things like “[insert minority here] people should go to jail”.
Granted. The sub dies because nobody reads it anymore and people downvote all the true unpopular opinions.
granted. r/unpopularopinions gets quarantined and a dozen new copycat subreddit are made full of their own popular opinions
Granted r/the10thdentist exists
Granted. All the popular opinions there are now unpopular, without post content changing.