But is it time to give up just because there hasn't been much progress yet? It seems now that we have #2 there's little incentive for #1, whereas there was plenty incentive for #1 before even if little action.
So no, I’m thrilled to see #2 show up to maybe get our healthcare system to limp along for at least a couple decades longer than it was looking like it would.
Besides, having healthier people will lead to better infrastructure for healthier lifestyles, purely based on demand. It's a virtuous cycle.
If you have a tiny, homogeneous culture it is still very difficult to radically alter it in the span of a couple decades (think: Sweden, Finland). For something the scale of the US, with the diversity of the US, there is no possibility. Anything suggested as comprehensive would be fantasy. There are only small changes that could be done, eg relating to sugar consumption limits in drinks and food; some would have a meaningful impact, however you still won't fundamentally change the culture's calorie problem.
Getting thinner will do extraordinary things for rebooting the malfunctioning US. Obesity does a lot of harmful things to work ethic, longevity, quality of longevity, productivity, mental capabilities, to say nothing of course diabetes and cancer and so on.