My take on it is that WGs do have something to offer on UKP, not least of which the perspective from 'the other side'. IMO this can lead to better punts, which is to everyone's benefit.
If you feel a WG has overstepped the mark, then as sensualencounter says, simply report her post and if deemed to be touting, she'll be warned/banned by a Mod.
I'm not suggesting it applies to you, but some on here do seem to have a sense of self-importance, and because it's a site for the benefit of punters, enjoy sticking it to the WGs by way of their self-styled 'summary justice'.
The punter isn't always right, the customer isn't always right. But yes, contributions from WGs certainly require scrutiny. Good natured jibes from the punting members can be fun, but sometimes comments can descend into thinly veiled misogyny from a few.
If you're concerned, report.