I was with you guys until this turn... because you don't know why someone is taking a medication.
There are legitimate metabolic disorders that cause people to gain weight that have no specific medication. But for which weight loss itself can prove helpful (yet very hard to accomplish).
A good example is PCOS. Too much testosterone in the female body, can cause retention of fat around the middle. That fat is a sponge for testosterone, which then keeps the hormones out of whack and leads to a state of Insulin Resistance causing the body to produce more fat on the same diet.
The only solution is to lose fat, which is hard when the body is so desperately grabbing onto it. It's a difficult cycle to get stuck in, not to mention the energy depletion that comes with the Insulin Resistance (food is not turning to energy).
As one of many women with PCOS, I could really use one of those GLP drugs. My DR wants me to have it. But insurance won't cover it and they are way too expensive.
It's not magic, it just influences the body response to insulin. A help and nothing more.