Previously believed by whom? Pretty sure we've been aware that obesity is a huge problem for a generation now. I mean we literally talk about an obesity epidemic. Next, science is going to find out that water is wet.
I don't believe this myself, but I do know a lot of people who believe being overweight is unfairly demonized and not as harmful as TPTB would have us believe. Many point to BMI as an inaccurate gauge of healthiness (there's a fair point there about eating disorders and ethnic predispositions towards higher BMIs) and unhealthy obsessions with thinness (as opposed to fitness). Look up "Fat Acceptance" if you'd like to…
Because it is. As you yourself allude to later...
> I don't think we should view fatness as a moral failing
It clearly is not. I suspect the only people who believe that are the folks 'born on third base' as it were.
> some people need a bit of a push to kick bad habits like overeating
Some people? The vast majority of people are overweight. Anyone who isn't fit & trim has no business commenting on anyone else's bad habits and moral failings. None. Got a little bit of a spare tire? Shush. Got some love handles? Shush. Skinny fat? Shush again!
> if we can reduce it, we should
100% agree.
Edit: Downvote all you want, guys, most of you pushing that downvote button need to lose weight just as much as I do.