That’s technically correct but it’s like saying we shouldn’t have an obesity crisis because anyone who eats less than they burn will reliably lose weight. We have too much evidence about human nature to treat something which happens so commonly as an edge case.

That's kind of the point the point though. A lot of people will lose focus on the reason for a metric.

the problem with figuring out how the numbers are being achieved is that, without tracking everything totally and fully, you'll be reliant on some kind of estimate/measure. Which can also then be gamed.