The people doing actual, good reviews/guides also use affiliate links. Getting rid of affiliate links to get rid of the bad actors gets rid of people trying to do it right. The bad actors will have another path in within a month while the person who was run out of their honest business is left hanging.
I think affiliate links are positive for Amazon, because they crowdsource aggressive sales and marketing, but are negative for Google (and everyone else). I think if Google could somehow ban affiliate links, they would.
