This is using BMI, which while the vast majority of these people are at the very least overweight it will be missing all the unhealthy skinny fat people.

I wish they would switch to a system that takes account of waist/hip ratio as if you do not have a narrower waist than hips (with a bigger differential if you are a woman) you are carrying more fat than you should be and are also at a risk of a variety of “fat” people illnesses such as heart attacks, diabetes, etc. despite your weight being in a normal range as you lack the muscle mass and/or skeletal mass for your height

The actual number of people who need to sort out their diet and exercise is just shocking.