I asked if they'd ever considered the societal implications of the work they did. They said "Oh wow I've never even thought about it". Probably a solid hire from Meta's perspective.
He didn't last all that long, he had a conscience. I've heard similar things, but not quite in such clear words, from several other people I know who have worked at Facebook/Meta.
That’s the issue here. Is this someone who found their morals or someone who found a stick with which to strike back at those who hurt her?
One of those doesn’t require her to change at all.
I hate facebook more than the next guy but this person just helped Facebook to accomplish usual evil things, and only stopped once she cannot profit. I'm pretty sure she didn't start that way or maybe even saw it that way, but objectively (in her own narrative, if you only take actions and ignore her own emotional justifications) that's what happened.