A startup founder who doesn't code is (presumably) bringing something else to the table. Whatever that skill is, it'll be more useful to the future of the business for them to spend their time doing that thing than having an hugely inexperienced developer writing code. The likelihood of a startup succeeding will be improved far more if, for example, the non-technical founder went out and did some consulting work to bring money in to the business rather than spending time learning to code and picking up things that an experienced developer could crank through in 1/10th of the time.
That's not to denigrate coders or coding. It's a skill that everyone can benefit from learning, particularly in knowing a good way to approach problems. It's just not something a founder should spend time on - there are much more important things to do in startups. Startups don't fail because a template wasn't updated. They fail because people didn't know about the product or because the startup ran out of money. Fix those problems.