His point isn't valid at all.
He asks how the tides work - We know. He asks how the moon got here - We know enough for any logical, reasonable person to understand how it's there, we have theories that add up to it perfectly. He asks why the earth has a moon and mars doesn't - Mars has 2 moons.
He's a blubbering idiot that doesn't understand 3rd grade science, and because of his lack of understanding of childhood education, he believes in magic.
As for the universe, we don't konw that. Yet.
“Anna, my strong, terrifying Anna.” -Cas
"You lack the requisite spine and testicular fortitude to study under me" -Elodin