As someone who had it prescribed by an endocrinologist, I can tell you what he said. I was only just in pre diabetic stage, but my insulin levels were crazy, as was my blood pressure and cholesterol.
Those issues resolved very quickly. The next time I saw him he was saying that even when I've lost a decent amount of weight he would recommend staying on a minimum dose long term as there are new papers being published every month on their posting impact on -
Heart disease
Auto immune symptoms
Strength, muscle mass etc in older age
Osteoporosis
All things that are impacting me already at 55.
There will always be people who see weight gain as a moral failing. I also think that says more about them and their inability to imagine anything that they haven't experienced themselves. It's a real condition, but for some it makes them feel superior rather than recognising they're missing an attribute.
I know that my ghrelin and.. the other hormone? which impacts satiety and hunger were tested as "completely buggered" , and that's why he went to glp1 so fast. All my hormones are impacted by Auto immune issues, the ghrelin, all my female hormones and testosterone flatlined into a menopause that took 6 months from beginning to end, and I was given replacement hormones to deal with that. Same with thyroid and parathyroid. Why would I not accept other help to deal with metabolic symptoms of tanking hormones?
Anyway, I'm very lucky that I have a consultant, that he has time for this stuff, and that recognises the quality of life issues as well as the long term repercussions.
The OPs reference to vaccinations is moronic, but at least confirmed that they know absolutely nothing about how medicine works, and therefore might be up for a little real life anecdote.
BTW, I've never taken any of these in the doses suggested. At the moment I'm taking half the starter dose of MJ, and still losing weight, although slowly. All the awful side effects I've heard of in friends have correlated with starting too high, or increasing the dose because it's week 4, not because the previous dose has stopped working.