Very much not true, at least if your including the new/indie author freebies. If you read 10 free kindle books by new/indie authors (I've ready maybe 15 or so) with an average user rating of 4.5 stars or better, good chance you will really like 1 or 2 enough to give it 5 stars. Most of them I find to be just ok, 3 star books to me. Rarely, I cant finish/get into a book, but that isnt common since I only read the highly rated ones. Its like mining for gold. It may or may not be worth it, but there is gold to be found.