There are a lot of cam-people who are escorts, though. I agree it's rude to assume someone does that when they have mention of it. As one of many that started doing this because of covid19, that would be very counterproductive.
And, what's really fucked up is how he already doesn't want to pay for anything at normal prices, and thinks he can treat you into thinking he has money for an escort. I feel people think sex workers are stupid.
I almost wonder if the price haggling is his twisted way of finding out if a model can be easily persuaded before he makes his proposition. People are nuts.