There's always been both sides.

One creating a foundation of absolutely stable, reliable code, methodically learning from every mistake. This code lives for many decades to come.

The other building throwaway projects as fast as possible, with no regard to specs, constraints, reliability or even legality. They use ecery trick in the book, and even the ones that aren't yet. They've always been much faster than the first group.

Except AI now makes the second group 10× faster yet again.