Gun death as a leading cause of youth deaths is not life choices.
PFAS exposure is not life choices.
A medical system that allows advertisement and more or less open bribery leading to an opioid crisis that’s killing enough people to bring down life expectancy across the midwest is not life choices.
Ineffective pandemic management by the government is not a life choice.
Obesity is a boogeyman, but it has been around for long enough that the recent significant drops in life expectancy cannot be blamed on it. And even obesity is likely not a pure life choice, food quality and regulation of food supply play a vital role.
I always found it amusing that we pump estrogen / hormone affecting chemicals into things and then give people a hard time if they have gender identity challenges and call it a life choice despite all the science to the contrary.
Life choices are a catch all diversion, a fairy tale people tell themselves to feel like they have power to avoid the horror.