Less fuel use and emissions? How so? The flight is STILL going to go.....whether or not the (miniscule % of) pax actually doing an MR are onboard or not...
And if folks are going to claim that the 500 mile minimum was removed because of MR's... (or even that MR's played more than a peripheral role in that decision...)
EVIDENCE please! Cos I (for one) don't buy it as an unsupported allegation.