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.
None of those videos is easy to make.
Sure, it's maybe not great to be so impressed by logistics or supply chain of a tobacco company, but from a business and systems view some of it is interesting
Sure I get it, probably there are lessons in there ethically good actors could look at and use — but if you find yourself casting away the ethical doubts too easily, you might be in a dangerous spot to begin acting unethical yourself. It is totally possible to learn about the whole system with a morbid fascination while being constantly aware of the ethical implications without casting them aside.
The real question for such an ethics-free look at a business is whether the unethical bits of a business can be really disentangled from the interesting bits in a meaningful way. That is very often not the case.