> And unable to answer well the question “shouldn’t my phone do this?”
Exactly this.
So much of the functionality of the Humane gadget, and this, overlap directly with a mobile phone. In Humane's case, due to the removal of a screen (and the projector not being a suitable replacement) it was either level (in some cases) with your phone's abilities, or a lot worse in others, and at great cost. This, at least, is cheaper and has a better screen...
Big picture, all these manufacturers seem to be taking advantage of is that neither Android or iOS have baked AI into the system, yet. When (e.g.) Siri becomes the interface for a strong LLM, both gadgets lose any differentiation they ever had and just become immediately irrelevant.