Ugh. It's not "bias", it's simply new science. Or perhaps "new-ish", since most of this has been known for decades.
They account for height and weight, but where do you see mention of race here, for instance? https://www.nhlbi.nih.gov/health/educational/lose_wt/BMI/bmi...
Their recommendations are utterly useless -- even harmful -- to South Asians.