Let's put it this way. A startup that insists every one of its developers touching ML has a sound basis in fundamental theory is going to get left in the dust.

Let's put it this way. A startup that insists every one of its developers touching ML has a sound basis in fundamental theory is going to get left in the dust. Anyone who wants to be the guy/gal who understands the fundamentals will be valuable. But we don't need everyone trying to be that person. And most wouldn't be successful, though they'd be successful as the guy/gal who does other stuff.