Maybe Goodreads is just what it should be, a place to quarantine all the nonsense concerning books. Amazon polices reviews heavily, such that a reviewer found to be in some way paid can cause their reviews to be removed from earlier, and sometimes authors see many reviews removed from their books. This is with books, not other Amazon products
One thing that also happens with reviews on Amazon, though, is that you get one star reviews from people who do nothing but leave one star reviews. Amazon won’t touch them