Seems like you just have an axe to grind about fat people. Protein is not the deciding factor in weight gain, calories are, so I don’t know why you think a link to the wiki page about obesity would be convincing that protein powder is snake oil.
Even when you coincide that it is relevant you dismiss with little justification. Also BMI is not a great metric for individuals, many that have a lot of muscle are measured as overweight because there is a lot more to bodies that height and mass.
Can you justify why protein powder is snake oil in line with the other things in the thread? I will grant that most people have more than enough protein in a regular diet, but stats about obesity says literally nothing about if powder can help your workouts give the results you’re hoping for.
Oh, sweetheart…