Coddling at its worst.
I am an real aircraft pilot, and this is something we are made aware of and taught how to respond (look away from the flashing light!).
Flash induced Epilepsy has never >directly< killed anyone AFAIK, however it can be an issue if operating a vehicle.
What is vital is if one does have epilepsy so they will be aware.
In short, if a game triggers a bout of epilepsy, it is a GOOD thing (tm) becuase one will now how to deal with it when it happens again.
http://en.wikipedia.org/wiki/Photosensitive_epilepsy