I am well aware of that because I am mainly a ground traveler because I like to immersive myself in the World rather that fly over it. (Although Grizzly Hills is certainly testing that right now 
.)
However, that does not change the fact that allowing people without motion sickness flying right off the hop while denying it to people with motion sickness is inconsiderate and therefore rude.
In fact, now that I think about it, it is worse than rude, it is downright discriminatory.