I agree with the article mostly, but one issue I've always had with product owners is the lack of willingness to lay the proper foundations for technical products to succeed. That can be anything from training and allowing developers to do a proof of concept before they decide on the technology. The importance of automated testing,code reviews, refactoring, etc.
Usually there's some sort of engineering manager / lead engineer who's in charge of deciding how the product is built from a technical point of view. He's the main collaborator of the product manager/owner and they need to get along well.
