Or consider amps with incomprehensible meters.
The Marantz SM-11S1 has an enigmatic porthole, front and center in the faceplate that contains a digital numerical read-out that constantly varies in values and, for the life of me, I can never fathom what it is that Marantz expects people to get out of this tech for tech's sake. Useful information is the last thing it provides.
OTOH, I totally love all other aspects of this amp, especially the sound quality and bullet-proofness of build & operation.