With you completely on this SCP. I know we've voiced differences of opinion previously, but I agree with you 100% here. The OP's broad and sweeping statement just doesn't ring true in my book.
I've never felt despised by any WG (wow, what do you have to do to invite
that kind of response I wonder), and the vast majority I've ever seen have been very happy to see me again, usually multiple times. Even if it's put on, which I doubt, it makes strong business sense, as does repeat custom in
any business. But from an SP's perspective, I'd imagine it's good for them to have someone book that they've met before and who they know isn't a problem in any of the numerous dimensions us blokes can present ourselves as such.
It could be that I treat women equally, don't patronise them or act misogynistically. But I strongly suspect it's what you stated - arrive freshly showered in clean clothes, sober and substance-free, on-time, follow instructions (so long as they're not unreasonable!), treat them as human beings and how you'd like to be treated yourself, and don't push your luck. It's not difficult.
If you combine that with a happy to be there attitude and good manners, in my experience it's difficult to have a bad time so long as they're of the same mind. Which all have been, with maybe the exception of less than 1% of all meets I have had.
They were the odd few nuts - possibly drug users, one or two that cancelled last minute - probably for a longer meet being offered after I'd confirmed with them, and one con-woman. And it's not like I'm spending £250 a pop - most of my meets are lower to lower-middle price range, although I avoid most Rom's just because they get so much negative feedback.
So based on my own experience, mostly all very positive, and it's not like I'm going to give Brad Pitt any competition in the looks or ready cash department. I just act decently and treat people in the way I'd like to be treated.