Just look at the image I included in the original post. It's a comparison between several shots in Jujutsu Kaisen where the shot is ghosted+dimmed and one has not.

In order to satisfy laws for preventing seizures for a minority of children in Japan, studios are required to release their animations with these filters applied to certain scenes. However, the Blu-ray releases are not required to be released with these restrictions, so the animations released in that format are unhindered and can be viewed as they were intended to be viewed.