I was told that the great rush of unburnt fuel/air mix entering the cylinder, would at best dilute the oil layer on the cylinder wall, or wash it off completly.
By then stopping the engine, a new layer would not be spread around.
Admitley this was more for petrol engines, I would expect a diesel not to be as bad, due to injectors, rather than carberettors.
Having suffered for years a neighbour who reved to the red line, then switch off, before the revs fell, I did ask questions. (Basic answer, was I lived next to a prat)
Bod