So I'm not responsible for throwing a rock at your car because the windshield stopped it and didn't crack?

There's documented evidence of intent here. The guy was trying to give their victim a seizure. There's nothing accidental here.

Of course if someone accidentally gave someone else a seizure, there should be different standards applied. Of course!

Also, yes, we need to make sure photosensitive people can browse more safely (for the same reason we put airbags in cars).

The book you throw at them isn't "giving someone a seizure", it's "attempting to harm someone intentionally with super malicious intent".