Or just about the fact that in large enterprises a lot of the diagrams are owned by architects, and they're done in some esoteric inscrutable format where only the architect can make changes and updates to it _after_ talking to the developers.
I don't think this was a knock against developers.
Oof... a lot to unpack in this phrase.
You would be surprised to learn how much "devs" actually know.
They may even recalibrate your ego a little bit if you were open to receive feedback.
Those "devs" are the people that have to turn architectural documentation into reality, sometimes ignoring it completely.