According to modern zeitgeist, if Facebook can't be trusted to moderate their users, Facebook should be deplatformed and shut down. Edit: wow, that blew up. For the record, I don't think Facebook should be shut down, and I don't think Parler should have either. I'm rather anti-social media, so I've never used either. We should have better reasons for doing things, and stick to them. Section 230 exists for a reason.
They've got (poorly paid and treated) human mods for user interactions, but apparently ad mods aren't a thing with them.
So I'm largely in the same camp; if they're enabling armed insurrection by white supremacists (or extremists in the middle east, etc), Facebook should be boycotted by their partners.
That's what happened with Parler. Facebook's more likely to weather the storm. Parler evidently wasn't able to.