Recently an indie author John Locke admitted he had paid for hundreds of glowing reviews of his own book. While it is without doubt an unethical thing to do, it was also without doubt a dumb thing to admit to. So like the whole class who gets kept in at lunch time because one kid won't admit to doing something wrong, thousands (or millions) of other authors have to suffer the fallout from this.
Should Amazon be on the lookout for shonky reviews? Yes, absolutely. But in reality how many reviews can the average author buy? If you are a struggling first time author you won't be able to afford to pay people to review your book. The reality is that most authors probably do get their friends and family to write reviews for them - but there is nothing to say you can't do this. Again just how many friends and family who actually have Amazon accounts would an average author have? Maybe 5 or 6. Sure some might have more, but we are talking averages here. Also if Amazon want to crack down on fake reviews, shouldn't they only be targeting people who have dozens, if not hundreds of reviews? It just seems massive overkill to take out authors with less than say 10 reviews - let's face it, with that number of reviews you are not going to be at the No 1 spot any time soon!
I get it Amazon, you are the big player and I respect that. I thank you for the opportunity you have given me as an author. But I'm disappointed you have taken such drastic action over this without any consideration for those of us caught up in the crossfire.