it would be useful if anyone in the company - CEO, salesman, designers, "X department" knew their way around the production code so your statement feels funny to me. look at sports - it would be awesome if everyone on the team is a great linebacker but ...
I think teammates would have enough context of each others’ positions that they could play the part if necessary, even if theyre not as good. They might even appreciate the skills gaps. So I think sports holds.
I know you're joking but I've worked in very engineering-heavy startups where this was the case and almost everyone had to write some code, production or not.
