This depends entirely on the moderation policies and general makeup of the subreddit.We couldn't have that conversation on Reddit because unpopular opinions are downvoted and removed.
Besides, even without "likes", the same thing happens on a forum. Unpopular opinions, if ignored, sink past the first page, rarely / never to reappear. If an unpopular opinion keeps reappearing, it's usually because someone keeps posting it.
There's also a difference between niche / minority, and unpopular. Something can be less populous but not unpopular. Something can be populous but others could still be sick of hearing about it.