As someone who is on the verge of unlocking his final mount, let me ask you this - what point does the armored version have and the achievement associated with it if you can farm a nearly equal one for far less effort that can also fly?

I personally see it as a 2-stage unlocking set - you can get a smaller one for prestige earlier but get the real deal by working hard for it as a tank in relevant content.

Forgive me, but to honor the stage 2 mount achievement I prefer to keep the first one grounded despite the trend of making mounts fly.