> I saw a tweet recently that perfectly encapsulates this: for most people over 30, certain things are "big screen tasks". I use my phone for a lot, but for some things I put the phone down and use my computer instead. I am most comfortable using a large screen and a keyboard for anything that requires writing more than a few words or using any interface for more than a few clicks.

Yup. From the frontier of mobile tech, I can say that a foldable phone (Galaxy Z Fold 7) is the first mobile device that successfully ate into this category, and bit a rather substantial chunks out of it. It's only been ~6 months into this experience, but the "big tasks" for me now are the ones that benefit from substantial use of keyboard and/or mouse. If it's only about screen space or doing things in 2-3 apps at the time, chances are my phone is now good enough for its mobility to beat inconvenience - though chances are also good that at least one of the programs will be a browser, because mobile apps still suck.