I don't see how the essentially magical appearance of an incredibly complex set of axioms from nothing at all is a plausible answer to the 'Why something instead of nothing?" question.
To be clear, I have absolutely no idea how to answer that question. I'm certainly not a closet theist. My best guess is that a useful answer is currently some way beyond our pay grade as a species.
So I don't find "Because math" to be any more convincing as an answer than suggesting god did it.