How much has a “fat blasé” thinking of the US contributed to its overweight problem?

Much has been said about the weight of US citizens and how it is going in the wrong direction. Isn’t the blasé, jaded approach the US has taken towards fat unintentionally feeding the overweight problem? If it were another problem like people deciding not to use scents or deodorant and smelled way more human than society has steered people to, or not washing and combing of hair, would people be just as cool with that? For women who traditionally benefitted less by being fat because of the blasé concern about fat and the advent of ”chubby chasers” who find women who decades ago had to settle for other really fat men or whoever they could get from a dating pool as small as a thimble, isn’t that taking away one motivation for them to slim down because they now don’t have to compete, they have men who are used to fat women and thus the dating pool for them has enlarged. All the way through K-6th grade there were only 2 fat kids in the whole school, and by today’s standard they would merely be chubby, nowhere near obese like some of these grade school kids are. If obese seems an alternate for of average, isn’t the unintended consequence people who do not see any need to slim down or that they may even be unhealthy?