I still have a FB account because it's the only place I can still contact certain people.

The nature of the beast means it's where I get people making defiant blanket statements of bigotry at me for any number of comments.

It is a place where that sort of ego rules.

I'm tempted to try an offer more nuanced counterpoint. But would I be working within the system or just feeding the trolls?

But even then I wouldn't be working within the system but within A system. There is always the option to just leave.