2. It isn’t wrong in every situation, just in this particular one the motivating factor is lack of willpower, prioritization and education. There isn’t an “easy way” as of right now. If one comes along it will also likely carry side effects
3. Its usually ill-informed because the difficulty of dieting is a known one and steps can be taken to alleviate or bypass these issues. Usually medication with outsized effects have proportional side-effects. And we don’t always know what they are. I don’t leave out the possibility that someone could invent a pill that causes huge weight loss with little side-effects, but I would bet a lot of money against it