I don't know who that is.
Anyway, it's possible that you and I seek different things from providers (I don't go for BJs or penetration of any sort) , but I don't necessarily see negotiation as disrespectful. Everyone's time is negotiable.
Do you not negotiate a pay rate or pay increase at a job for the work you do? Or negotiate a sale that you are making? It really has very little to do with whether or not you see the person as a human being worthy of respect or not, it's more about value that you feel you are getting. This is the same logic an SP has to apply when deciding what rate works for them. Nobody is owed cash for s3x, and nobody is owed s3x is the bottom line.
Sometimes an SP will prefer to give a reduced rate handj0b and make some money rather than make no money because the guy doesn't want to actually have s3x and pay those prices. Price discovery is a natural, dynamic thing, and even a grocery store will accept a negotiation if the deal makes sense.
Please note that I'm not condoning harassment or begging for lowered prices, I don't think it's a little misguided to flat-out consider negotiation as disrespectful.