Your organization should have a "NO man"
I have never been able to kill stupid things before they cause damage
One of the most important things an organization can have is a "no man". A project that I was involved in when I worked at Google was completed on time primarily because we had a very senior (DE level) engineer tangentially involved in the project. He was near the end of his career, and he just didn't give a f* about politics. He'd sit in design reviews and rip stupid features to shreds, with accurate estimates of what they'd cost in terms of headcount and project delays. He was probably the most valuable member of the team because he was respected enough that his objections kept the project focused and on scope, and it was a 20% project for him.