I'm an engineer who recently started at Facebook. I can't speak for the org as a whole, but during the team selection process, the main themes were ads teams and integrity teams (fake account, scraping, security, etc. all fall under that umbrella), so it's something Facebook is taking as seriously as making money.
> what do they think of their employer still enabling massive disinformation, astroturfing etc?
This isn't a behavior management wants, and there's a lot of internal effort to reduce it.
Something the public doesn't get but engineers do is it's impractical to manually review every action on Facebook, human reviewers aren't necessarily more accurate than ML, and you'll always have some amount of abuse.
> Just honestly curious how they deal with these issues on their personal moral compass.
I have no qualms here. Roads are used during thefts, but no one asks construction workers how they sleep at night knowing the roads they build might facilitate crimes. Spammers gonna spam, but that doesn't mean we can't have any online platforms.