Taking your comment at face value: because telemetry can lie even more easily than users, pointing the finger at entirely the wrong thing in the worst possible

Taking your comment at face value: because telemetry can lie even more easily than users, pointing the finger at entirely the wrong thing in the worst possible way: with cold, hard numbers to convince most people who don't want to deal with the issue. Telemetry complements feedback, it should never replace it entirely.