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.
Try Z Fold 7 with a grip case (one with a rubber band on the back to fasten it to your palm). Grip cases make phones in general much more usable on the go, but with a foldable, it's arguably what makes you feel safe using it for laptop-grade work while walking or without a surface to rest against.
Still not a laptop, but for me it's enough that I haven't used my private laptop since getting the Fold 7 half a year ago. Extreme portability can cover for a lot of other UX problems.
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.