Everybody in Eternia must have been nearsighted

How else do you explain no one ever looking at Prince Adam and going "Hey, he looks exactly like He-Man!" or vice versa?

A disguise so flawless, how could anyone ever suspect?

On the other hand, maybe everyone did know, but just played dumb, so that Adam could keep living out his power fantasy. You know, like what everyone does with Superman.

h/t The Thought Emporium Imperial for the pic.