Relatedly: it validates that people are assholes for making fun of others who are overweight. And not many people like feeling like an asshole.
Edit: starlevel004 is right.
Contrast this with Parkinson's which is a neurodegenerative disease with no known non-pharmacutical treatments and even the pharmacutical ones lose effectiveness as it progresses as they only treat symptoms, not the disease itself.
This is precisely what the FDA guidance contains: that GLP1s be mixed with lifestyle modifications.
Almost all diets are not durable or sustainable. This is not unique to weightloss drugs - most people who lose weight, regain it.
The current FDA guidelines support your assertion that GLP1s should be prescribed in addition to other tools to help people change their eating habits.
What the FDA does not prescribe is moralism, which is what “help learning discipline” tends to imply. If you didn’t intend to frame your argument in terms of moralism, you might consider a different word choice.
Chronically obese people, who are prescribed GLP1s to enable them to eat fewer calories. Are you interested in the reasons why people are unable to eat fewer calories without medication? It’s a pretty fascinating problem, one that intersects genetics, environment, and culture.
There is no single main root cause for obesity. We just combine it as one because there isn’t a lot of long term research or funding for it right now. There is a lot of sigma against obesity and people keep blaming other people instead.
Thyroid hormone disorders have been linked to cause weight gains. This can’t be fixed by simply eating less, it can literally do far more damage.
Medications have been linked to cause weight gain as side effects. This wouldn’t do anything to eat less until they stop taking meds and for some, they cannot do that.
Americans’ increasing desire for sweets have increased the sugar content in all of our food including the fruits and vegetables over time. We’ve intentionally bred our healthy stuff to be sweeter. So eating less can make us even more hungrier because we go into sugar crush without realizing it. Changing diets is difficult without us doing all sorts of calculations of finding the right cheap healthy food at the right store and that is you are lucky enough to have any.
If we think about it longer than, say, 5 seconds, we will realize no, it does not.
Your particular desire for punishment is not really relevant to anything. That's not how medicine operates, and that's a good thing. You're attempting to make a moral argument here. Moral arguments are usually stupid and worthless - try making a different argument.