To me, the most valuable insight in this article isn't that a non-tech founder needs to get super-technical. Rather, it's that he needs to demonstrate a willingness to do everything he possibly can. That is the secret sauce. It's not about being able to talk shot for shot with a super-techy coder. It's about not being the kind of person who throws his hands up in the air and sets limits to what he can or can't do, or will or won't do. Being a successful entrepreneur means doing anything and everything it takes to get to success. And it's a serious red flag when the co-founder, from the get-go, is already broadcasting that he's setting limits for himself (such as not even attempting a prototype).
So big kudos to you for posting this. This is awesome and inspiring.