I see it differently. The entire ethos should revolve around product that works. Product the meets a market need. Product that brings joy (not friction) into the world.

Any tool that can meet that ends should be considered.

Put another way, users don't care what anyone (i.e., in engineering) does or does not know. They're not going to wake up and say "I only want to use products that don't use Copilot." Nobody cares about any ethos, etc.