If you want to start a software startup, you should still learn to program. Even if AI writes most of your code, you'll still be in the position of an engineering manager, and to be a good engineering manager you have to be a programmer yourself.

But there's another even more important reason to learn to program. That's how you get ideas for startups: when you look around the world with a programmer's eye, you see all the things that could be built but haven't been yet.