I think you missed the jab the parent post took at the grandparent post.

Just because you don't think you need x amount of hours of battery doesn't make it useless for everyone else.

Also, people who question why do you need more? Because you can do more things. Our usage of smartphones is increasing in many ways and improved battery life should not be counted in terms of how many hours of talktime it will give you, but how many hours of <insert heavy battery eating application here> use it will give you.