What's the difference between a fanless laptop and a Linux OS tablet? A keyboard on hinges or something?

Looks like StarLite needs a kickstand behind it to keep the display up, the hinge likely has no stickiness whatsoever, it's just like a folded piece of the folio cover. Like a Microsoft Surface. Can't type in lap, hard to use in tight spaces like planes or busy coffee shops.

I have a couple of Pixel Slates with Brydge keyboards that have actual good hinges, that's much closer to a laptop. Still more top-heavy than laptops.