I had a similar experience where I tried out a Z Fold 7 with a kickstand and foldable bluetooth keyboard. I was curious about the feasibility of an all-in-one computing experience; it was clunky but surprisingly somewhat productive.

Then when confronted with scenarios where I had no stable surfaces I realized why the LAPtop form factor reigns supreme.

Peripheral add-ons like the NexDock are very nifty, but at that point you are suffering from the same physical constraints of a phone + laptop lifestyle. All with zero of the benefits of a locally accessible, more mature, and capable OS.

My excitement towards Dex is really about it being a stepping stone towards ChromeOS replacement. I only want that because Chromebooks getting the the Google equivelant of the Apple Fast Pair experience will lower the cost of a convenience that my professional life increasingly depends on. Important for people who have too many meetings, I guess.