Precisely. I refuse to update my phone (Sony Z3C) because based on feedback it performs worse in battery life, because Google strongarmed Sony to remove their s

Precisely. I refuse to update my phone (Sony Z3C) because based on feedback it performs worse in battery life, because Google strongarmed Sony to remove their superior battery optimisation logic (Stamina) and include Googles halfassed one (Doze). So if I'm happy with current configuration, why change it?