There is a way round it, only punt with WGs with phone numbers which i have been doing for years on A/W in London and surrounds. No number no business off me.
Its also my view that its only the WG that should require feedback as they are the one selling the service. The concept of me needing feedback i find utterly ridiculous.
Whilst I agree with this overall, the counter argument from my regulars who don't see zero feedback guys, is that in their experience, too many of these (not all obviously) are fantasist time wasters who never turn up or even say they can't make it
If they see that the punter has feedback from other well established prossies, it gives them a degree of comfort that the punter will actually turn up and not be a nutter of some type.
I don't know if this is true or not, but prossies don't
usually like to turn business away
so I'd say there's some truth in it.