Let's take 1000 people above 30 BMI and divide them between us. I give them my intervention of semaglutide and lifecycle changes; you give them your intervention of "work harder you lazy fatties."
I guarantee you an arbitrary amount of money my group will be >10% lighter than your group after 6 months.
It can't possibly work for literally every single one of them, because there are still obese people. "They simply don't do it" is a restatement of the problem rather than a solution, and about as helpful as telling coalminers to learn to code.
I think this is a values disagreement, not a factual one. I view obesity as a medical problem to be solved and not as a moral failure, whereas I think you see obesity as a moral struggle and drugs as a crutch or an admission of defeat. To me it's more about balancing the risks and dangers of an injection and making sure people have tried less risky things first, and "lost cause" is not how I'd describe taking a weekly injection to manage an otherwise-intractable medical problem.
Where did morality come from??? That's entirely injected from your own interpretations, and has absolutely nothing to do with what I said.
Honestly it sounds like you think people who are overweight have "failed" in some way, as I don't believe that at all. "Taking injections weekly" is also doing something about their obesity, which is just fine with me, I'm simply explaining how "willpower" is also a viable possibility. There's no need to take injections if you learn more about willpower and strengthen yours over time, and this is supported by a cornucopia of recent and sound science.
A failure of willpower is not a failure of moral character, why do I even have to say that?
I guarantee you an arbitrary amount of money my group will be >10% lighter than your group after 6 months.