As an Air user who pretty passionately hates hearing a laptop fan, my wonderment at the quality of the Pro's audio would end the moment I heard that fan whine.
I've had a similar train of thought, based on my experience with earlier Macbooks -- that I would pick the Air over the Pro specifically because it does _not_ have a fan and therefore could never make fan noise. But like spinningarrow, I don't think I've ever heard the fan on my work-issued M1 Pro MBP.
