There are reasons for it.
What about all these punters with thick wallets who write things in their reviews like this one: "She is incredible VFM" or "Girl like her could easily charge more". From my point of view it is a hint for price increases. And then prices go up 20% and they still in many cases say "oh well she is still good VFM". But for many punters (and for me) these 20 or 30GBP extra are like a bridge too far.
I was going to make a list of wgs (forum darlings included) who put their prices up this year, but thought against it because all that work trawling through the profiles and reviews would end up a) helping lurkers b) creating fuel for the fluffs to spunk over c) probably cause some white knighting
Back when I joined, I started with lots of feedback wgs but then tried low feedback wgs as it was more exciting than seeing a tried and tested girl.
When you read multiple reviews on the same wg, you start to see the pattern or routine that the wg goes through. Not so much a spontaneous session when you know what'll come next.