…I’m not a fan of any variation of the “Superman is the real person, Clark is the disguise” idea…
Okay, I’m not trying to say “your wrong”, but, that’s literally how the character works. Kal-El is an alien from Krypton, raised by humans on Earth from infancy (given the name Clark Kent), and he disguises himself as a human to fit in with the other humans. He just overdoes it a lot.