Do you really disagree that there's way, way too much bad stuff on Facebook and it's had a hugely harmful impact on our society? Or, do you just think we shouldn't do anything about it?
(here's another way of looking at it: if the guy was hired as a "data scientist" by the republicans, wouldn't you question his motives?)
Also I work in politics, and people move between the private, political, and public sector all the time. The GOP hires data scientists from tech whenever they can, because they're sought after professionals.
My point was if former social media staffers can't work against this stuff, what should they do.
How much bad stuff is "too much?" Which stuff is "bad"? Who gets to decide? Why should I trust them? Who and what else is influencing them? What happens when the people making those decisions change? Why should I cede the authority to decide which "stuff" I get to see to anyone other than myself?
There are no good answers to any of these questions, and there never will be.