No, I think it's pretty accurate. Most of the girls I pay for see their clients the same way as you do with your daily clients in retail/restaurant/service industry. You don't REALLY care that they have a nice day. Sure, you may not actively wish them ill will, but you certainly don't like them. They're just another body in a sea of bodies giving you money for a service.
I KNOW you've felt this disassociation with your customers if you've ever worked any job with a stream of people, day in, day out, serving the nice, the cruel, the ugly, the pretty, those who think they are better than you and those who treat you like people, until they all blend together. If you haven't worked in the service industry, you are either very sheltered or very rich.
Now imagine how disassociated you have to be to have sex with them, day in, day out. Go ask a hooker, truly, what she thinks about the men. Though be sure to do it after you've paid, the answer beforehand will be carefully rehearsed and not the truth anyways.