Perhaps that works for some people. I'm glad it seems to have worked for you. But the facts of the world we live in show that it doesn't work for most. "Learn the lesson and be disciplined!" is not effective advice.
In practice, this doesn't happen that often, no, but it's a theoretical goal. Probably because we're in the pre-GLP-1 era with regard to mental health meds. Maybe that will change.
I would say that controlling what you put into your mouth is easier than controlling your anxiety.
As someone that uses food as a coping mechanism for stress, I agree with the GP - if the underlying problem isn't resolved, the weight will come back.
You can much more easily use the physicality of your surroundings to physically deny yourself the food than you can deny yourself anxious thoughts.
With eating there are 2 components to it, mental and physical, so you have more opportunities and more options and avenues to potentially control it.
The additional options to control it should IMO make it at least some amount easier to control in the end since some people may be able to take advantage of physical controls to limit themselves where that's not an option for anxiety.
Then explain why people have so much trouble with it without resorting to a thought-terminating cliche
GLP-1 in those cases helps manage the problem better.
But for those who are not in those cases where Type 2 Diabetes has sunk in, then they need to use the opportunity to get better while on it and kick themselves into high gear or they will have learned nothing from the experience
GLP-1s don't do that directly.. but at least they might help people move more, and give them confidence to do more for their health instead of seeing it as a lost cause.
SSRI - about 10% chance of major sexual disfunction, often permanent, significant likelihood of sleep disturbance, majority get blunted emotions. Debatably effective.
Not really comparable.
There is simply no way around the simple fact that there is only 1 way to eating well long term - that is lesser, more healthy portions. GLP1 may show a person what things could and should look like, what is achievable but the path needs to be walked by themselves. The alternative is either lifelong consumption of this chemical with various bad side effects or premature death (or both, to be seen since nobody has a clue).