Nuance in applying the BMI is important. Like I'm a short guy(how short I'll leave it up to you) and according to the BMI I'd be a "healthy" weight at 120lbs. I can assure you if I ever drop down to 120 I would look like and feel like death(and honestly if I drop like that I might be!) .

The BMI can be a useful tool but what is and isnt a healthy weight can vary so much(and thats not even getting into lean athletes who are muscular obese and how silly that is). People have different body types and even then if you are visibly fat and not just broad shouldered or big breasted you can still be healthy. There's definitely a point where people hit where you get too big and the health problems and mobility problems start coming, but where that line is can vary and it would be nice to see the BMI usage change. So we wont get doctors ignoring patient symptoms and problems and suggesting you lose weight when something is wrong.