I was a huge fan of the books and frankly I think the book series itself went off the rails at some point. I'm still not even done with book 9 and don't really plan to finish it. I still enjoyed the Amazon series, but I will admit it wasn't perfect. I was surprised to see that so many people seem to vehemently hate it.

I do recall seeing a lot of one star reviews on Amazon having to do with what the actors looked like, and I observe the same thing in the reviews for Tom Clancy's Without Remorse, which I also enjoyed.

Are Amazon productions perfect, on the level of other established studios? No, they're still finding their stride I think, but there is a definite trend of review bombing and I think that's why people are probably assuming it's happening here.