Why I have no interest in Coils more specifically, T9.

[Zaft]

Does anyone else notice how its usually people who haven't cleared the content saying that end game content isn't challenging?

That's usually how it goes. Check out the people who complain about WoW being "too easy." No mythic kills (think Savage), usually not even heroic kills (normal). They do LFR (Crystal Tower) and then complain about how the game is too easy.