We’re talking about that infamous Porygon episode? More facts in regarding that incident.
After that event, the Pokemon anime went on hiatus for a while (and was nearly canceled). The episode that did after afterwards was Pikachu’s Goodbye. Kinda almost feels like the episode was sort of a meta way to both admitting that they screwed up with Pikachu as well as to ease their audience back into the show. The episode was a bit more slow and mellow in tone compared to a lot of the other episodes and as the dub title suggests, Pikachu almost left the cast.
That incident also screwed up the order of the episodes being aired as well. Also after that episode, they did went to all of the other episodes had edited the attack animations of certain Pokemon by either dimming the lighting, slowing the attack down, or both. (We obviously got these versions in the dubs.) It’s fairly easy to notice when rewatching the series. A lot of the attacks, especially Pikachu’s electric ones, are played very slowly.
Speaking of effects that can trigger seizures in some people, the recent Disney/Pixar film The Incredibles 2 has effects in it that did trigger seizures in a few audience members. I won’t be surprised if they alter those scenes and/or put a warning on it once it gets a home release.
And to add onto this, after the Porygon incident, it’s become the norm in Japan for anime to open with warnings to watch the series in a well lit room and far away from the television. Not just with Pokemon but in general.
Dragon Ball Kai edited some of the more extreme effects from the original Dragon Ball anime for a similar reason. Goku and Vegeta’s classic fight in the Saiyan saga had to remove some strobing effects that were in the original for example. And another example would be Gohan becoming a Super Saiyan 2. The original anime had the background flashing red and yellow very quickly during his transformation which was something they had to tone down for Kai.
Japan also edits TV shows and movies that have these strobing effects when they air on TV. Two examples that come to mind are the Lightsaber fights in Star Wars and the lightning effects in the Harry Potter films.
@ILoveMyoozik
To make things even worse, a few of the news broadcasters played the exact same scene on the news which, y’know, gave even more people seizures.
@EPPony
The Porygon family have also cameoed in some of the movies.