What the hell language was Muratori teaching with that he doesn't have a sort?
Even C provides a halfway useful comparison sort in the box† and they're so cheap they don't even supply the O(1) growable array type
† It's named qsort, but despite the name it might not just be Hoare's "Quicksort". However it also won't be somebody's half-remembered bubble sort.
Handmade Hero teaches depth-first development. I'm not sure who it benefits
He's using C++ as closely to C as possible.
Part of the purpose of the series of Handmade Hero is to build a game from the ground up with no dependencies. So I don't think he's bringing in stdlib
So he could use that, but goal is to be someone who doesn't necessarily need to do that.