[bilbo0s]

This.

I don't like it anymore than anyone else, but hate filled bile is profitable. Hate filled bile can earn you money. It can earn you votes. It can earn you power.

While FB may not care about votes or power, they are in business to earn money. They have expenses, as HN User gavman alluded to. Until better ways to make money present themselves, we can expect most social media firms to flirt with controversy. Because things haven't changed much from the newspaper era with respect to the bleeding doing the majority of the lede-ing.