In my (obviously anecdotal) experience, that’s not who the primary GLP1 user is.
It’s the suburban mom (or dad sometimes) who wants help losing a little weight. Instead of being 300lbs like your example, she’s 160lbs and wants to be 140lbs.
6’1” 230 wanting 210 without having a third bike injury for it. 40 doesn’t heal like 20, turn your head wrong and you are in pain for a month. It sucks.
I really feel like this is just about the circle you are in. How many 300lb people do you know? 16% of the country is on GLP-1's as of mid 2024, Im sure its higher now. Every single massively overweight person I know has at least tried GLP-1s
The morbidly obese people I know fall into two camps:
Those that still want to reduce their weight: All of them are on GLP-1s now (and losing weight!)
Those that had totally given up: They had long since stopped attempting anything to reduce their weight
I suspect that the larger you are, the more likely you are to fall into that second category - getting to 300+ lb involves a certain level of accepting defeat to begin with.