I don't think anyone is denying there are good technical reasons for a shorter battery life,
I was merely making the point that as mobile phone technology has evolved there have been sacrifices, and battery life is one of them.
Other sacrifices, IMHO, have been size, weight, ease of use. In days before touch-screens, phones had become truly tiny. And they had nice tactile buttons that required no more than a cursory glance, as opposed to the dedicated focus of attention a modern smartphone needs to make it do anything.
My favourites were the 'flip phones'. So easy to answer, just unflip. And virtually indestructible, no matter how hard you dropped them, the precious screen was protected.
On balance I'm MUCH happier with my iPhone, and glad that the evolution took place. But I do think the old phones had a lot going for them too, and sometimes I miss them.