Amazon Has No Taste is a pretty good title if you ask me, it's an excellent summary of the problem.
Amazon's Echo Chamber doesn't strike me as that bad, it also seems to describe the problem decently. Amazon is big enough and has enough eyeballs that they can make mediocre products appear to succeed for quite a while. Because of that insulation the products don't improve nearly as fast as they probably should.
Not originally - it was titled Amazon Has No Taste, and was changed to Amazon Echo. Even the current title (Amazon's Echo Chamber) is link-baity IMHO.