Thank you for your thoughts.
> The things blocking creativity are a combination of the software ecosystem being unready to deprofessionalize itself and exit the industrialized "app" model
Could you explain what you mean here? Not sure I quite follow.
So one example of an app that does allow you to do creative things effectively is grageband on iOS. It's an amazing tool for sketching musical ideas, which can later be more closely refined at a full desktop setup, so in a sense I agree that smartphone software can't be seen as a "complete editing tool", though it can be used much earlier in the creative process. DAWs are pretty complex tools and if you can get a decent version of a DAW on a phone, I see no reason why other tools shouldn't be possible.
I guess one way of looking at it would be to compare an artist's sketchbook vs what they produce on canvas. One is small, portable and allows the artist to capture moments as come up. The canvas however is much larger, essentially static and requires long, painstaking work to get right. I am sure that I am not the first person think of this analogy, but that seems like the level of creation that is suitable for the form factor.
> turning the phone into a portable scanner or audio recorder
Sure, but they also use the caluclator, spirit level etc, these are all pretty established tools, just made more readily accessible, rather than harnessing all that computing and visualisation power a smartphone can offer.