Pretty much nailed it. Touchscreen devices are not for creating; they're for taking what you're given. They require big fat buttons for big fat fingers, which you poke like a trained pigeon to get your food pellet.
Largely true, although I'm still blown away when I read about someone who has written whole pieces of software from their phone, on their bus ride to work or something.
I think it's somewhat of a generational thing. I'm still somewhat blown away when I hear stories of kids writing school papers on their phones. I want to turn to a laptop for even more extensive searching or longer emails.