The problem is, from the website's point of view, that a single employee who says "no" could result in a negative report. Meanwhile the owner couldn't have known, prevented it, or (after you're gone) done anything about it.
When the review is based on purely the physical attribute the possibility of an owner getting blind-sided are severely curtailed.
That's why there's numerous RV c/g review sites, not everyone thinks alike.
I know a little about what drives a "free" site because I was an admin. of sorts on a large, probably THE largest 'sell your stuff' group of sites. The OFFICIAL word came down from on high, leave the scammers and spammers alone, DO NOT DELETE them.
When this new policy was questioned the reply was shockingly simple. Spammers and scammers put up ads so attractive lots of folks view them. We don't care if they only look, curse or laugh, and leave it.
They generate HITS for the banner ads!! AKA, cha-ching!