480i content, CRTs, analog signal chains, non-digital transports, film grain, et. al., provide opportunity for our imagination to step in and produce a better interpolation than the ground truth might otherwise provide.
This video and timestamp comes to mind: https://youtu.be/2sxKJeYSBmI?si=ikuOuZl-Ho5_VK4k&t=1613
Its only really recently that CRTs have been surpassed by modern screens in terms of colour.
However I'm not going back to CRTs anytime soon. Just a dumb OLED public signage display, and some high bitrate codec
My interpretation is that back in his day, TV was grayscale, grainy, and interlaced, and therefore demanded that the viewer exert their imagination to "complete the picture".
I imagine that if he were to see today's 4k full-color 120Hz panels, he would call TV a "hot" medium.