You could say that about literally any shady business. Imagine seeing a PDF proving tobacco leaders knew for decades that it caused cancer and saying what you did.
Being monetarily successful does not mean you’re good or shouldn’t be criticised.
If you think that this is an entirely artificial example, consider the fact that the same man designed the V-2 rockets which were hitting London during WWII, and the Saturn-5 rockets which brought astronauts to Moon: https://en.m.wikipedia.org/wiki/Wernher_von_Braun
I think the idea being debated here is that it’s impossible to know whether the business practices would work without the lack of ethics. It might not be a good case study or a direction you want people going in as it might put them in some of the ethically compromising positions, or even worse require people to put themselves in those positions to work
But I would be comfortable pushing back on the idea that we should structure and operate our medical clinics like theirs because they made scientific breakthroughs.