It can be, but so can existing as an ordinary citizen and not devoting your life to activism, abstaining from everything but the most sustainable resources. Some people lose or maintain weight with zero effort, while some have significantly lower TDEEs and experience actual Minnesota-starvation effects, so I disagree. At least make the moral failing not doing the basics, like planned meals with whole foods and some amount of exercise, so it’s fair.
Anyways regardless, morality is irrelevant here. The rest of society would be better off if these people lost weight, and I doubt forcing them would go well, but voluntary GLPs would.