I certainly would have to question why the OP chose to mention the situation in his post especially given he knew the SP would likely read the post. It certainly does come across as passive aggresive at the very least.
A simple "should SPs ouright ask for reviews?" would suffice. There really is no need to get into specifics especially since OP says he has no interest in exposing anyone.
I do agree outright asking is probably poor form but in the large scale of things it is such a small issue compared to what really matters. I can't imagine it being a factor in not returning if the overall experience was extremely positive.
It reminds me a of a popular website many of your are likely familiar with used to rate university professors. One of my better one's would ask at the end of the year for students to place positive reviews on the site if they enjoyed her teaching. Since she was a sessional and therefore did not have tenure it was important to her to have students enrolled in her courses.
Now this certainly was a turn off somewhat and tarnished her ratings but that did not change the fact she was an amazing prof.
I suppose a middle ground might be to ask in the description of your services/schedules for reviews if gentleman feel they are warranted. That way no direct asking is done but the profile lets others know it is appreciated.
