If a good product has 1K 'bad reviews', and a crap product has 10K 'bad reviews' - the system it working.
Anything else is just gaming the system to inflate review scores across the board.
if you feel only 3 star reviews are valuable, amazon lets you read just the 3 star reviews. If stuff is being 'drowned out' its because your trying to read all 500 pages of reviews?
To me, a much bigger problem is the fact that reviews on amazon are for totally different products then whats being sold (Sellers 'recycle' pages and change the product being sold - allowing them to keep the reviews and ratings)
So basically - I have to read the reviews 'most recent' first anyway..
If I buy a product or a service, and it is defective or not what what was promised or not upto mark, I have the right to complain about it. Shutting down my valid complains because it would create an overrepresented proportion of negative reviews is downright wrong.
What Google Play has done is not the right way to fix the ratio of positive to negative reviews, especially given the issue at hand. It also should be RH the one fixing its own reviews by addressing the problem with its user base.