It’s an anti-seizure measure. Which makes sense for TV where kids might come across it by accident, but it doesn’t make sense for streaming services where we could easily opt in/out of those versions.
Edit: This is what it looks like, compared to Blu-ray. They dim the whole screen and blend multiple frames together, which makes it hard to decipher what’s going on and mutes the colors. (Another):
is the opacity of the characters lowered as well? I feel like I can see the background through the characters
Sort of, but no. They’re transparent because of the frame blending. Since moving objects/characters occupy different parts of the foreground across multiple frames, the background ends up getting blended into them. They call that “ghosting” because it effectively makes them transparent.
So they do lose opacity, but it’s not like they’re lowering an opacity value or anything.
