Facebook abused their position against developers. Kind of like if Apple gave developers full access to all details of every iPhone owner to convince them to develop iPhone apps, then when they get developers onboard they start cutting access randomly to devs, and offer some devs lowball offers to sell with the implied threat of “or we’ll cut you off entirely”.
I can’t imagine that “randomly” makes sense, or that they have proof of anything like that. “Arbitrarily” means that Facebook gets to decide how much of a creep is too much. It’s very confusing to have the same talk about an offer to sell their company: creeps are the last thing Facebook wants on their payroll.