I'd really rather liked it if that supposedly "intelligent" designer took a bit more time at designing the urogenital tract of human males.

The most successful animal by what metric?

I fail to see that, it's simply one of all other random mutations, it's just that this one has a big downstream effect of enabling other more complex mutations

Merely implies a very good fitness function.

So Steely Dan documented this first?

You're positing the existence of a far more advanced lifeform than merely a clever monkey with pretensions, which then somehow created said monkeys. That's like saying that it's easy to become a millionaire, just start with a billion dollars.

That's not an explanation, you just replaced a problem with another harder one.

Intelligent mutations? How does that work?