I think it’s important that everyone feels like they own the architecture. In practice, it means that everyone puts in ideas and the person or persons in charge only (gently) nix the ideas that don’t fit with their vision. But it’s important that everyone not feel stifled by a heavy-handed architectural vision that’s dictated from on high.

In tech, there’s often many right answers and a leader’s job is to ensure the team lands on one of them, not necessarily the leader’s favorite one. You’ll end up with far more inconsistencies if you have high employee turnover. Team cohesion is often more important than getting all the technical details perfect.