> some people view it as, yes, completely and totally a net-negative on the world [...] I think the good that facebook does do is both incidental and replaceable.

OP wasn’t claiming that Facebook is a net positive for the world, just that it indisputably provides a valuable service for at least some people[0] and improving the privacy features is only a good thing. It’s unproductive and misguided to attack Facebook for this.

[0] https://www.buzzfeed.com/annehelenpetersen/ex-flds-new-chapt...