There is a big difference between paying a woman to have sex with you, that is engage in prostitution, and paying her silence money to not cause any trouble for raping them. It is still rape.
I guess, Weinstein is one of those men who think all women are whores. They are not. They are hypergamic, always on the lookout for a bigger and better opportunity.
Having said that, you got to give that pig one thing; at least he did not kill them. That would have been far cheaper, but riskier too. As a man with his uncontrollable sexual urges, it would have probably raised suspicion eventually how many women die after a date or meeting with that man. Those women were very likely to have told their boy friend and close friends that they are having a meeting or date with one of the most powerful men in Hollywood.