@aral "The modern answer is telemetry"
That right there is such a good illustration of the problem. It doesn't say that it's an *effective* answer, just that it's a *modern* answer, and well... that's probably because it isn't effective.
It's completely absurd how there's now basically an entire cult around trying to gain insight from telemetry, when we've known for a decade+ that this *just does not work* and surveying even just a couple of users will give you more reliable data.
But number must go up, apparently.