Rather than Linux on mobile phone and I am starting think it would make more sense to rethink laptops as smaller foldable devices.

Maybe foldable screens can cause a renewal of the laptop. A device that is more prone to actual creation than the phone.

My problem with having a laptop with me is the general bulk of the object with 10-11” being the minimal reasonable size to use an actual computer.

A 10” 4:3 screen folded in half would be like a very wide iPhone. Not the kind of thing you’d put in your pocket but maybe it should be integrated with the bag itself. Not computer in the bag but a bag that you open to unfold both keyboard and screen.
@santi
I carry the Google Pixel 10 Pro Fold in my pocket all the time. I just don't carry a keyboard, yet. πŸ˜„
https://store.google.com/product/pixel_10_pro_fold?hl=en-US
Before you continue