Reading the article, it says there are steps certain epileptics can take to avoid seizures:
“The trouble with theaters, it’s dark, the lights flashing in there is more like a strobe light,” he added.
A single seizure should not cause long-term damage to most patients, Dr. Chez said. Wearing sunglasses with cheap blue lenses can filter the red light for moviegoers who want to be on the safe side”
Obviously if someone hasn't been diagnosed with epilepsy yet,the precautions listed above wouldn't be known.I certainly didn't know how dangerous certain strobing lights would be to epileptics.
But if, as I believe is the case here, the man knew he was epileptic, then why did he ever go to a movie theater?