I do not see the problem that
" This is a self-moderated topic. If you do not want to be moderated by the person who started this topic, create a new topic. "
Any thread should be moderated or do you want the same mess here as in twitter? Pple just write there pointless posts with one word

self-moderated topic is a big problem because the OP can delete the posts he does not like and we will hardly know if there is any transparency and fear of trolls or something, I do not see this being a good argument since if the person provide good service then there will be no reason for people to complain, people complain when someone provide bad service.
Moreover there are a lot of crazy people. I used to work in the service sector and can say it for sure.
I think if there is no criticism, only positive comments then it's suspicious, otherwise I don't think it's a problem