What point do you think you're proving here? Your sibling, with some rare condition, is anecdata.
Do you honestly think this is the common use case for Ozempic? Maybe you should try looking at the data. America has an obesity problem, and it isn't because there's widespread metabolic conditions. People eat too much and move too little. The use of this drug is 90% cosmetic. And, as I said, have at it. Elon using this drug was one of the first times I'd heard of it. Metabolic condition, of course.
This is no different than half the population having ADHD and being on stimulants. Or Quaaludes. Or whatever. It happens over and over.