i always hated this argument. so any adult with a living father isn't a real adult with humility? come on, that's just stupid.
No, that's not the point. The point was that, from 1938 to Byrne, the moment where one or both of his foster parents dying was the moment in THIS PARTICULAR NARRATIVE where the "boy" became a "man."
Even if the first issue of Action Comics, it was the death of the Kents that "strengthened the determination that had been growing within him" to use his powers to fight for justice.
You are correct that the creators of Superman could have found another story narrative to learn humility-that, despite his powers, he would sometimes fail, just as Waid did with Flash. However, they didn't.
