Interesting topic....!
Twenty(?) years ago, I wrote to a classic bike magazine complaining of more shoddy than good items I seem to be experiencing from suppliers. The editor's response to my published letter, in not so many words, replied basically that it was unheard of...!
What, with freedom of speech, democracy and all that, the good, bad and ugly should be named and accounted for. Tripadvisor style of reporting have been accurate in my many travel experiences, it also provides opportunity for a seller to respond........only positive reporting is namby pamby, say it as it is!
Best regards......