Science might be about to rescue us from that with Ozempic and friends, assuming those don’t turn out to do horrific things to a person over time. Once some of those go generic and the prices plummet, anyway. But failing that, yeah, it’s gonna be a lot of skinny immigrants helping obese, diabetic 70-year-olds with shot knees & backs get to the bathroom. Or maybe we’ll get robots for that, by then, go full Wall-E, who knows.
I’m actually quite hopeful that ozempic mainly works by helping reverses hormonal damage caused by bad diets. Ozempic causes low gut motility which can be very unpleasant and potentially dangerous, there are already conditions with the same effects so it’s possible to benchmark what long term effects will be like (It’s not great). I think there are safe ways to do it and that will be figured out. I think it has already changed the culture for the better. I’m hopeful this high BMI era turns out to just be a phase instead of a one way ratchet. Where I live there are few overweight people so it’s always a bit of a shock to me whenever I travel.
Honestly when the current crop of adults from the 'healthy at any size' era get old it's going to be a medical shit show, I'm pretty sure governments will end up resorting to Canadian style MAID for the poor, sick, and old as no-one will have the money for proper care.