Why would people need/want flying when there's nothing to do? You usually want something when you can use it, and when it benefits you the most, aka when there's plenty of content = you have reason to travel a lot. Your and the other guy's argument is so wrong on many levels.
Like "most people don't give a shit about flying". How do you know? Have you done a survey? Oh, no, let me guess, you asked your "frendz", right? Why was that fiasco with WoD flying, that forced Blizz implement flying despite they said flying was gone, forever? And why are topics like this active even after months? Because people don't care, riiiight. Even YOU care, because you post in these.
And you can be happy with legion content regardless of flying. Why do you think everyone who wants flying is unhappy? You are just making things up that fit your non existent argument.