Yeah I can see it
Well as you say, my rectangular phoneslab does most of what I need on a daily basis.
However, there are times when I'm wondering what restaurants are nearby, and my under-6" Moto G6 just doesn't do it. No matter how you cram the UI, listing 20-40 restaurants isn't going to fit, especially if you also want some sort of map.
It's just what a tablet is for, except a tablet doesn't fit in my pocket/on my bike and the need rarely crops up.
I sure as hell am skeptical of the technology though. I'm not only going to wait for v1.1, but possibly v2.0