It always pisses me off that people espousing this view have never critically examined all the negatives stemming from Marta’s approach. It isn’t simply an issue of balancing up the mistreatment and the level of success. She made many, many mistakes and the nature of her system was that it and she threw away a lot of medals. Of the four Olympics she did, in two of them she was outthought by a smarter coach and her team ran out of bodies because her preparation system was so ridiculous. It was only once this was changed, against her wishes, that the US actually started winning Olympic golds, and the final quad owes as much to the random good luck of Simone turning up and the Russians deciding to give the head job to a Putin crony as it does to anything else.
Basically, even if you want to make an assessment of Marta’s results without making an ethical call too, you still need to factor in all the things she did wrong. And by simply saying she knew how to make champions, Paul doesn’t.