It is NOT the job of the Regulator to regulate on issues of commercial judgement, which this is. Safety - yes. Logistics - no.
It is not the job of the Health Department to monitor your personal health either, but when an epidemic potentially occurs the Health Department rightly steps in.
A single engine failure is a matter for your airline. An epidemic of engines all turning up at the "Hospital" at once is a matter of public concern regarding provision of RPT services and hence regulatory action.
The difference in interpretation between these two quotes is based on measurements of risk/ safety not grounded against costs. As a read of the FAA engine guys release weeks ago, suggests, the measurable risk had not increased to the point where Continued Airworthiness action was warrented.
Just because some suggest that there is an epidemic on the horizon does not mean that it will actually occur (SARs etc.). So like other concerns watching, measuring and a measured response in avoidance seems to be the best action all of which is being practised.