So your reference point is a niche device from 2013 running a stillborn mobile OS with a 1ghz processor, and because that didn’t gain traction, you’ve concluded the segment is not viable.
My reference point is existing for many years and seeing many people pushing for dockable computers and seeing them repeatedly not take off.
Notably the people pushing for dockable computers are computer geeks who say things like "I only listen to OGG Vorbis, MP3 is unusable" and "no wireless, less space than a Nomad, lame" and "I could build Dropbox in a weekend with rsync" and "I don't understand why people need to see pictures or video, text is all I need". Normal people aren't itching to SSH from their TV using a bluetooth keyboard connected to a smartphone with a VPN so they can do X-Forwarding of Brave browser. Normal people are fine with buying a laptop with Gmail and using an Android TV stick to watch from a streaming service.
Okay.