You know, it even says in the strip that the imagery is disturbing. The reference to epilepsy is not meant to be a comment from an innocent, sane, well intentioned person.
omfg Golfindad. it's a cartoon. It's a cartoon. He isn't making fun of epileptics. Christ almighty, if you're that easily offended, go read something else. wah wah wah. My mother-in-law has epilepsy and this comic didn't even remotely make me think of her condition.