That’s an extreme case, but the point still stands. For example, right now, I’m pretty fat, because I haven’t shifted the weight I gained over COVID. Even though I’m visibly way larger than I was, I’m not much heavier than I was pre-covid, because I’ve lost a heckton of muscle. It’s insane to me that BMI will look at me pre-covid, and look at me now, and say “that’s the same picture”. Especially because I personally found that the best and safest way for me to lose weight was to focus on getting strong and fit first.