Ofcourse it isn't. The users already are sick, with vestibular disorders. The iOS7 "effects" are exacerbating their disorder.
So, to resolve this, Apple needs to provide a "feature" to disable these features. Or a warning just like some video games have "...Photosensitive Seizures- A very small percentage of people may experience a seizure ..."
I suspect these are the same people that cannot watch 3D movies and are hypersensitive to earthquake tremblors...(dizzy, nausea..). I don't blame them for bringing this up because it shows the truth with Apple in that Apple knows best. Which they don't. But how they remedy this is what will determine Apple. -- Splat
Lets not forget that this so called "power user" admits to having the same issues with iOS6 too. People who get motion sickness from this likely get the same motion sickness from games, videos, TV, and maybe even driving. They already have issues with their ears and such, which should be examined by a doctor(most are correctable), but blaming iOS for it is dubious at best, and is likely a primer for a lawyer to sue Apple in a class action suit with "all the people affected", and make off like a bandit. This is like those people who say wifi makes them sick, and then try and sue everyone who has it or uses it. This kind of tactic is old and fucking annoying.