safetypee... Thanks for the response. We are closer on this than may be apparent.
I certainly agree that we don't know the cause(s) yet and therefore cannot come to conclusions re correlation. But the point of mitigation in safety sensitive endeavours like aviation is to, at times, take proactive steps to reduce the likelihood of a recurrence, sometimes long before we have direct evidence of cause or contributing factors. The MAX grounding is of course a recent example, but others come to mind re groundings or restricting certain ops until more is known.
Such decisions cannot be taken lightly but on occasion prudence dictates we must modify or eliminate certain operations until we do know more about cause. Much easier (and more defensible) to justify taking such action than not doing so, if another, more serious, event were to occur.
And, at its root, this is not a regulatory problem. In my (far too many) years directly involved in airline, airport and ANS ops and safety, it is the service provider (company) with a mature safety culture that will take risk mitigation action long before a regulator. In the (hypothetical) best world that is how it should be.