The ratings on reviews here could be equally attributable to changes in punter perceptions and behaviour, as well as anything to do with WGs (of whom there has always been varying quality).
I don't trouble myself with too much deliberation of this type, because the only factor I can control is myself. So I do my research, trust my instinct / experience, decide how much I'm prepared to pay, what type of woman and scene I want, etc. Then I proceed and learn from the experience.