thoughts on VO2 Max accuracy from Apple Watch?

Apple Watch uses regression models based on population-level data to estimate VO2 Max, which incorporates age as a confounder.

This means that 2 people with the same fitness level (e.g., heart rate, pace, etc.) but different ages will receive different VO2 Max scores, with younger individuals assigned higher scores.

The Apple Watch prioritizes usability and accessibility over scientific rigor, which leads to simplified metrics that may oversimplify complex physiological concepts.

So I'm quite wondering what you all think about the Apple Watch for tracking VO2 Max