Might there be an option of 'put money down, demand a review before arbitrage, get your money back if you win' solution?

The money should filter out spammers. The price should cover the actual costs to defend against DOS. The biggest issue would be that bad actors could get insight into how Facebook detects. But maybe more openness here would be good!

I don't think this should be automated, but I also think there aren't enough resources provided for moderation. It's a thankless job that requires supporting resources (like therapy). However, it's treated purely as a cost-center to optimize.

Sounds like Facebook is more trouble than it’s worth.

Sounds like an unsustainable business model. Why should we care? Set the rules / laws that are good for society at large and let them figure out how to make a profit or fail IMO.

When it comes to big tech I keep seeing people try to solve their problems for them. We should just legislate. If they can’t make it work someone else will fill the gaps.