[Bartweiss]

The problem, though, is that it's not the sort of positive outcome you can put on a CV or otherwise use professionally. You simply can't badmouth an advisor, which is part of the "look what I overcame" narrative. Without that you'll either be "just another PhD", or to people who know the advisor, "a PhD from that jerk". The latter might get you sympathy or antipathy, and the former will get you nothing special.

None of this to say it's not an impressive achievement, or an educational one. But in the professional sphere, it's not proof of any of those positive traits - they'll still need to be demonstrated elsewhere to trade on them.