The American diet is insane, full stop. However, I've just begun a GLP-1 regimen to address a willpower problem, not a nutritional problem. I'm not quite young anymore and have given lots of other approaches a shot over the years, but have persistently failed to achieve a weight that is not a threat to my health.
So far, what being on a GLP-1 gives me is a steady state that most people probably find quite unremarkable: I don't crave a snack, and I don't thirst for alcohol. Both of those desires have had real control over me for a very long time.