This has a bit of a holier-than-thou approach. He was in a radically-different position than some of the whistleblowers — he was an engineer working on features that would clearly appeal to FB’s user base.
A lot of the people saddled with the hard work of civic integrity & election integrity are well-paid but severely under-resourced by the company. Facebook only cares enough to put out PR fires, and not prevent real-life ones resulting from its work.