> Programmers should not be empowered to perform roles for which they are an ill fit. In general, programmers are detailists who speak the language of the computer; they do not have a big-picture perspective nor do they understand the problem in business terms. Their social skills are very often lacking, and they are prone to arrogance.

This seems like a problem that can be solved during hiring. These are not necessarily attributes of programmers in general, maybe just the ones you are finding.

I've worked at companies where Product and Engineering roles were separate, and information had to pass between the two in the form of docs, conversations, specs, charts and so on. I've also worked at companies where there was no dedicated product role: Engineering was responsible for the implementation, the design, the product-market fit, the customer need, everything. Honestly I think that way works better, because there is no necessary back-and-forth negotiation about priorities, features, and quality (except what goes on in the tech lead's own mind). No need to have some separate person go talk to the customer and deliver requirements to engineering on a platter. It's much more efficient. You just need to hire the engineers who are not just ticket-implementors, but who can also do the product and business work.