Well, if the majority of people voluntarily chose with their hard earned cash to walk around with tablets instead of small phones, then it's just the free market at work, and there's not much you as an individual can do about it.

Apple in the days of Steve Jobs was notoriously opinionated about small phones being the best and preaching on how they're much better for ergonomics, as a response to the assault of Androids with much larger OLED screens, but even they shamelessly caved in and adopted the larger screens against their own previous rhetoric, since you can only piss against the wind for so long before you get wet(as in loose sales and market share to competitors who offer what customers really want, larger screens).