No high paid manager wants to learn that their visionary thinking was just the last iteration of the underpants gnome meme. Some things sound good at first but unfortunately are not that easy to actually do

Devs are where the project meets reality in general, and this is what I always try to explain to people. And it's the same with construction, by the way. Pictures and blueprints are nice but sooner or later you're going to need someone digging around in the dirt.