[fallingsquirrel]

That's a complete non-sequitur. If you cut off your feet and get shorter, it doesn't mean the human species has physiologically changed. And if you eat more calories and get taller, it doesn't mean the human species has physiologically changed.

[s1artibartfast]

Yep, and it's not like there is a mysterious lack of cardiovascular and health consequences that would make us question the belief that high BMI is bad

[Izkata]

Even that is relevant, because it would mean the measurement is now wrong.