I have read this thread with fascination since it began. Now I will take the plunge and make a contribution.
The focus and assumption in much of the discussion and criticism of the OP has been that he (and the unknown SP) seek to remove a negative review. I can’t claim to know anything about the actual circumstances of that specific case. But I make this post to offer a different, and more general, perspective - namely that in some circumstances any review (be it positive or negative) can cause issues for an SP.
In my few years of visiting thai massage providers I have encountered a number of thai girls who were upset about being reviewed on this site – and their reviews were consistently positive. In my experience it is not unusual to be asked “please don’t review me” when being shown out after a massage and HE. Two SPs have explicitly asked me if there was a way of getting reviews removed from UKP. In one case the SP had only one review on UKP. It was a positive review, but she was very upset. Her problem was she did not want friends/family to find out she was offering ‘extras’. Ok, she was naïve to think she would not be reviewed, but I believed her concern was genuine. In another instance an SP was trying to go legit with a new massage shop. In the past, reviews in which she offered extras did not bother her. But now she was going legit, she did not want to be associated with those old reviews. Her reviews were positive, but she wanted to make a fresh start. She was using a new name to start her legit enterprise, but an OP had included reference to her previous persona in his review (hence blowing her new identity). The SP was understandably upset that she was not able to escape the past reviews and was worried about the impact on her new shop and image. Specifically, she did not want her kids, who were approaching teenage years, discovering embarrassing reviews.
In both cases mentioned above I sympathised with the SP but did not take any action on their behalf – although I did highlight that a contact email for UKP admin is available on the webpage (with no login required).
So that’s my contribution. In a nutshell my point is that the narrative in this thread has focused on the assumption that the OP was attempting to assist an SP to get a negative review removed. This could easily be incorrect. In my limited experience even positive reviews can cause issues for SPs under certain circumstances.