Seems to be contradicted by the tweet?
>3. Apple was well aware of my writing before hiring me. My references were questioned extensively about my bestselling book and my real professional persona (rather than literary one).
I do think AGM's comments should disqualify him as a candidate to work in a diverse work environment. But I don't want hiring to be more exhausting than it already is on either side, so aren't situations like this the reason we have work at-will arrangements anyway? What could Apple really have done here to prevent this? "Sign here attesting that you haven't ever said anything that could point to you being a prejudiced person in the work environment". If it turns out you did say something pretty bad, then too bad you had to relocate for this job because the offer is withdrawn.
I'm sympathetic, I _know_ I've posted really stupid "edgy" things on social media some time between the ages of 12-15 that's likely buried in a set of redundant servers somewhere in the world. Stuff that would get me fired immediately if I said and believed them today. How do you convincingly demonstrate to an employer _and_ to your coworkers that the person from then isn't you anymore?
You make a good point about hiring, though. They could probably read reviews of his book, but I don't know whether the reviews would mention its sexist elements -- probably depends on when it was written.