Yes, but just the same, if you knew about someone having trouble selling a good product, and you took pity on them, one way you would probably not react is by approaching a group of such people and lecturing them in detail about all the unethical practices they shouldn't do, most of which only apply long after a sale, and many of which are commonly used by successful salespeople in a way that satisfies their customers.

And when you think about it, that's pretty much what you do here, if you apply the transformation:

make a sale --> get a date

unethical post-sale practices --> unethical relationship practices, abuse

annoying-but successful sales practices --> PUA techniques, feminist-disapproved language

See the problem?