[razzimatazz]

The GoT analogy continues if we think that as the TV show continued, certain book plot points were missed out, overlooked, or perhaps even negated by decisions made for the show.

Book readers then had ready ammunition to share with the world "the TV series was WRONG, dishonest and false... the dialogue proves X but they changed it in the tv series!"

So they remain gleeful but they need to share their conspiracy(Book plotline) with the masses because otherwise the masses won't understand the same reality that they do.