Just because something is "normalized" doesn't mean it's morally just or even legal. If your boss presents you with such a proposition, you can file complaints, and even for ridiculous requests work related, you file with the DOL. It's simple.
Once they bring sex into it, there's an entire different set of parameters. it's why a lot of employers have policies against it. At any time, if a woman says no or is hesitant and your persuade them or hold something over their head, or threaten them in any type of way to get it, you're in danger of being accused of rape. It doesn't have to be forcefully.
Herein lies the problem. Once they're no longer with it, and it continues to happen, and the additional threats, manipulation, coersion - there's a crime committed. All it takes it 1 "no" and something happens against your will. The issues here with Puff are the actions that happened after they said no. That's what the prosecution is going after, while the defense is playing the "willingly participant angle."