The problem is that some people go searching for content that they disapprove of, then complain loudly for engagement. They find it even if the “algorithm” doesn’t show them the content that they want. This then creates trolls who farm their own engagement off of the offended.

This particular site was doomed because it tried to control those people while failing to explicitly identify the problem. They mistook it for a one-sided political issue, then they found themselves with a bunch of politically aligned people who were (shock) still arguing about what content was “appropriate,” and still provoking each other to farm engagement.