Yes, but even if the specic allegation was not true, his whole relationship with someone he had power over was highly inappropriate. Unfortunately though, given that the senior leadership had a history of engaging in such inappropriate relationships, Google’s action here is to be expected.
That is not established.
> They found the allegation credible.
“Credible” is not “true”; it is quite possible to find both a claim and it's negation to be credible.