From what I've read they don't like to be called/classed as hookers
Yes, even this specific issue been well covered.
They happily take money from fat, ugly old men in return for letting them fuck them rotten when they'd never dream of it otherwise, but like to kid themselves as much as their clients that they aren't prostitutes.
There's few things better in this world than a friendly, level-headed, hot, happy escort who enjoys her job and gives a great service. There's few things worse than than a dishonest, narcissistic little hoor, so far up her own arse she prefers to delude herself she isn't one.