And as a cherry on top, Apple uses custom fans designed to emit noise in less annoying frequencies and when multiple fans are in play, slightly varies their speeds to avoid harmonizing. So even when they do run, they're not perceived as being as loud at most speeds.

You can mostly fix this by running your CPU in "battery saving" mode. CPUs should basically never boost to the 5GHz+ range unless they're doing something that's absolutely latency-critical. It's a huge waste of energy for a negligible increase in performance.