"I'm too smart and superior for smartphones. I know that noone asked, but I think it's important to share that information. I also can't be bothered to read any part of the article I'm commenting on, considering it doesn't apply to me (being so smart and superior by not having a smart phone). Can someone answer my question that I wouldn't have needed to ask if I read 5 sentences?"
They're not useful? I'm literally using one right now in a way that can't be done on a dumb phone. Look, I love dumb phones, and I would actually have one if my lifestyle allowed it, but I get so much value out of my smart phone it's just not practical to use a less capable device.