It's frustrating to have new gen phones go backwards in an important way. I don't think most manufacturers have gotten to where we as owenrs would ideally like them to be, battery life-wise. Yet, it's one step up and two back.
I especially recall the choruses of optimization and efficiency being particularly loud pre-S6 release. Then, the phone was releaased and, precictably, people complained about the battery life.
Regardless of new processors, the top juice guzzler on our phones, no matter which phone we have, is the screen.Putting a bigger screen with a smaller battery isn't going to ever be overcome with "optimization and efficiency." Not with current technology, anyway.
Battery life is high on my personal priority list. I've been mostly very happy with the S7E's battery life since I got it 13 motnhs ago. I chose it instead of the S7, who's form factor I prefer, specifically because I was thinking/hoping its bigger battery would be enough to compensate for its bigger screen and still be better overall. Which is how it turned out.
But I'm not falling for the smaller battery with bigger screen black magic.