I left this comment on the site's comment section (apologies if others have already posted these suggestions - I didn't read through all the comments):

Try using fakespot.com or reviewmeta.com. They're both sites setup to try & check the validity of Amazon comments using different methodology - such as how many times a reviewer has left a review, certain trigger keywords known to be used by bots & how many reviews Amazon has deleted from a review by request of the merchant (yes, Amazon will do this!). This will leave you with a much better sense of whether or not a product has been 'review-bombed' or if the company is up to shady practices.