This is an incredibly divisive mentality. The word "balance" gets thrown around a lot, but it's commonplace for a reason. Both engineering and "design & reality distortion" are valuable for a start up. You have to balance the two.

You're always going to have power struggles in startups. That's the nature of the beast when you put highly motivated, competitive individuals in a room, but the smartest of the players know that with the help of everyone around them, their chances of success increase many times over.