Nope your argument doesn't follow from parent's point.
Parent is saying people want durability and better battery life and would gladly sacrifice thickness for it, not sacrifice all the things that iPhones have and those old Nokia's didn't.
It's a false dichotomy, either an iphone 6 plus or a nokia? Give me a break.
I'd happily take the iphone 6, add 20-40% in thickness and weight, make it more durable and have a bigger battery, and let the phone sit flat on a table (as opposed to the camera sticking out like now) without having to mess with a case.
