BMI is imperfect, but it's better than the other fast & cheap measurements of obesity. A DEXA scan & full bloodwork would be better, but that takes a lot of time and money. A scale with body fat measurements is nice if you pay for it and use it at home. But basic BMI is good since it's so easy to calculate for *average* people. It's not useful if you're an athlete, but people with that much muscle probably have access to better measurements.

> These omissions are why the AMA adopted a policy in June to downplay the clinical use of BMI, calling it “an imperfect measure” that has been used for “racist exclusion” and that has caused “historical harm”.

That sounds like the root justification for avoiding BMI.