I wanted a clear example without going into details that might distract from the point. But you are correct that "not very nice" is a significant understatemen

I wanted a clear example without going into details that might distract from the point. But you are correct that "not very nice" is a significant understatement. He was horrible to them and I honestly don't think his art balances out his behaviour. If life was justified, he would have been in gaol quick smart and his art career never would have happened. But after the fact, we can take what we can from his art - which others seem to do more than I - while acknowledging his deplorable behaviour and sanctifying the respect and dignity of his victims.