The thing is, weight loss should be about learning and easing yourself into the habits of 1. Healthy Eating 2. Adequate Exercise 3. Not sitting on your arse all day, hence I feel like giving people a hack to skip all that grind is not good - you avoid learning about how to take care of yourself in the process.

Whilst true, for a lot of people they have no will power or ability to change their habits of a lifetime without drug based stimuli. So it is to cater for them. Otherwise the NHS cost burden is simply far too high over the long run.