Good for you. I feel completely opposite. I would rather Blizz took the time and effort to design the game to account for flying...like they did with BC, Wrath, Cata, and MoP...not this lazy nonsense.
And people really need to realize that this whole pathfinder nonsense started with WoD because Blizz was trying to avoid having to completely design new zones to account for flying. But people harassed them enough that they devised this pathfinder nonsense to buy them enough time to complete the work, but sold it off as "intended"...and they've continued this with each expansion afterwards for the exact same reason.
They used to have all this built out with the aforementioned expansions at the beginning (BC, Wrath, Cata, MoP), so there is no excuse for them not being able to do it with the current expansions.