I thought foldable phones were dumb until I saw a bunch of phones and tablets in person at a Huawei shop. They are super-neat actually and I now see how they make sense.
The rollable laptop seems to be something in the same vein? It is much smaller than a laptop with that screen size.
I wish the phone guys would stop folding and start rolling. Id buy a pixel9xl with a cigar round bit on one side (ideally left side for me) to rolls out tp a tablet sized screen when i choose.