A lot of his fans I know would never care if it's only 1080p. They have been watching his videos at even lower resolutions than that, on the trains, buses, cars, planes or sneakily in work places over lousy Wifi and cellular. This split screen would still kill it even at 720p or lower. In place of a 4K screen, I think a nice pair of earbuds would be more useful. The guy has failed so many times with focus but I don't remember him failing at the sound, which is maybe half of his great content.