Even assuming you are completely correct in your assesment there is still a wide variety of different players?
Is the game developed by whims of players that don't want flying? What about the players that don't care about raiding? Is is developed by those that want a return to old talent trees or the ones that want a combat system more akin to a Action RPG?
If the game is actually developed by players then those players are simply amazing at going for compromise solutions everywhere? They could have removed flying completely and reverted back to Classic world exploration entirely by ground, or conversely they could have designed the game entirely for flying and made the game more akin to a lobby for raids.
The simple fact that they have not shows that there is no single monolithic group of players that the developers exclusively cater to.