People banging on
Unfortunately Basil, People tend to "Bang on" because nobody is listening to something they feel is important.
I agree it is often alienating when they do but to suggest that pumping poison round a jet engine whilst separating it from the cabin air by a simple oil seal (designed to work as a wet seal) does seem a little questionable to my simple mind.
so, "banging on" or not they may still have a point.
And no, I do not have any vested interest one way or another.............