You're asking the wrong and a dishonest question.
I would give the same back pats to a newspaper company, when advertising tobacco at all was legal, if they let some advertisements slip through and get put on pages closer to articles meant for young people than they thought, or if they let some research papers that was co-funded by a tobacco company through to their write-ups.
Facebook is not the company making the ads, they're the ones approving the ads. There is a _meaningful_ difference.