to be honest i don't see this as a positive news at all because it looks like they are trying to advertise themselves so that they can sell their NFT token and make as much money as they can.
It's thier right to make money by selling their NFT and we are not bound to buy those NFTs. They are offering bitcoin as payment method and this is bullish news for bitcoin adoption. Other airlines will follow the same if they see that Emirates airlines business is increased by taking this step.