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.
The fact that a shady business used some tactics to advance its cause doesn't automatically condemns the means.
https://www.yadvashem.org/yv/en/exhibitions/through-the-lens...
And also Vrba–Wetzler report
https://en.wikipedia.org/wiki/Vrba–Wetzler_report
I don't want someone to think that i'm blaming someone for reading stuff. I just think and see that sometimes for people it is very easy to forget or miss bad things (harm to society) when their salary (or income) depends on ignoring this.