I'd be wary too, but in at least some cases a WG wanting to do this can be perfectly innocent, IMO. Quick story for you:
In Jan 2019, I punted badgurlbrooklyn a few times, while she was at Annabelles in Milton Keynes. Check out my second review. Apparently she'd only got into whoring herself late 2018, but was quite entrepreneurial & went Indy around February. At the time I posted her review her AW account was saying she insisted on seeing a pic first for new customers. The AW profiles gone now, & her twitter's gone private, but I remember her saying on twitter that the pic requirement was purely for her own protection, and nothing to do with screening for looks. I can partly confirm this as I'm far from young or good looking, but she gave me one of the most enthusiastic & natural services I've ever had, seemed to really enjoy it.
And the good news is that if of interest you can talk to her about it yourself. Brooklyn's gone back to agency work, now at Northampton massage for £120/hour:
External Link/Members OnlyNot facially stunning, but has an amazing body & a lovely friendly & submissive personality (though says she can switch too.) so I'm sure would be an excellent punt for some.