

Yeah that’s a terrible example of an unhealthy fat person, she is an outlier for sure, was so overweight and could run and sing at the same time! I’m sure it’s harder on your joints and all but if someone can out-dance you, while singing loud, she is in better cardiovascular shape than you.
BMI misses more often in the other direction (skinny-fat), being fit and obese is much less common.
It’s my understanding that the only proven health metric with regard to size is waist to height. Your waist measurement less than half your height? Then you don’t have too much abdominal fat, and it’s the abdominal fat that is a bigger risk to your health.