The engine also has a rest cool down and get ready for the next waypoint
What's equally peculiar is why he feels the engine benefits from a "rest" and a "cool down". Attributing anthropomorphic qualities like that to an engine is often wrong. An engine is at its "happiest"
when it's running at its normal temperature. If anything, it would be marginally better for the engine if you stay in the air and avoid the unnecessary cool-down.