User blog comment:Miskos3/Fairy Tail 531: Pegasus vs. Black Dragon/@comment-7418318-20170414215900/@comment-7418318-20170415133808

"the concept"? What concept? Motion sickness isn't a universal concept.

Knowing you get motion sick on a land-going vehicle does not mean you get sick on a flying machine.

There are plenty of real life Humans who get seasick or sick in cars and are totally fine in a plane (once the plane has taken to the air at any rate). And this isn't speculation... I experienced this first hand so I know it's true. I had a few years in my youth when I had to take medication to not get sick when driving in a car, but flying was no problem.

Besides, all it did was set Acnologia back 2 seconds and there is no practical way to use this "weakness" to beat him, so why is it such a massive issue for you? It was just a silly joke to lighten the atmosphere. Acnologia is still as much a threat and as invincible as he was before.