Lernt, i never said it was a machlokes vetween Der Rov and Rav avigdor Miller. The brisker rov never said that we can destroy the world through using plastics and driving SUVs, or taking trains(he took them all the time)
Saying that gedolim live simple lives and would agree that using plastics is an issue is like saying (and i heard this once) that the reason why gedolim move back and forth during davening is that they’re aware of an Eastern religious idea of… whatever it is) except here it’s worse because we have no proof that they’re even consciously reducing their carbon footprint at all!
If you can find a gadol who says this openly, I’ll happily agree, so please ask around!