M4 MacBook Pros use a quantum dot (QD) film rather than a red KSF phosphor film

So far, the answer anecdotally is no, at least not in situations where lit pixels are moved quickly into black areas. In practice, my obnoxious green text black background terminal was kind of gross to scroll, but haven't experimented much with others yet. Playing games has thus far been fine, scrolling in other contexts is fine for practical purposes. Happy to update this if you want after I ruin my new MacBook by experimenting more

Hmm.

I just set up a 4K terminal (542x143 chars) using the 'homebrew' theme (green on semi-transparent black) and did

prompt% ls -larS RemoteAstrophotography_com-M63-Stellina.zip | awk '{print $5}'

4514072533

prompt% cat RemoteAstrophotography_com-M51-Stellina.zip| base64

... and it is happily scrolling up the screen, lightning fast, way way too fast to read, and responding instantly to CTRL-Q/S. Seems ok to me.

The response being referred to here is the quickness of the pixels' ability to change.

Certainly a clever way to test it. In terms of response, I meant that at least on a fully black background, you should see ghost lines of text between where the line of text was and where it's going, almost like a mouse cursor with a trail