I've interviewed several smart people from Palantir and naturally I did not hire them. They might as well wear a scarlet letter.
If a candidate told me they got fired for intentionally sabotaging Palantir's production operations, that would neutralize the issue. So far haven't met that person.
The ability for google to legally and materially read my emails transcends law, classifying emails and my knowledge. Ethics doesnt even start when its done outside society. Advertising is second order financial gain derived from their absolute power over retained information. There's a bigger picture.