Why is TG convinced the showriters hate them?

Hello, never read the book (planning to) and browse both subthreads.

I am keep on seeing constant negativity on the green thread that the showriters are against the greens by making them villains.

Tbf I never read the book, but I have heard that it always depicted the greens as the villains. And that the show actually made the characters better by giving them nuance (Aegon, Aemond and Alicent as examples).

Just wanted to get an understanding, because I see TG always saying they prefer their side because they're more interesting (actually sort of agree, their dysfunctionality is entertaining and reminds me of the Lannisters, whom I really enjoyed on GOT). But then they complain about writing decisions that make them interesting but is not according to the book? Like I am confused lol