I have a disabling health condition and primarily read and write on my phone. I tried a tablet and a 'fablet' with a stylus, but it’s easier laying down to just hold the phone with one hand and finger type with the other. If I sit at my desk all day to work on things I can’t do on the phone, I pay for it in neck and back pain the rest of the week. It’s been worth it to finally publish something besides comments on Medium, but it does take a lot out of me.
I agree, there’s only so much we can do with the phone, but it’s my only option most days.
Hopefully, my condition will improve after surgery and PT in a few months. If not, I might be writing a follow-up article to yours about writing apps for Android!