Someone's gotta own the roadmap and prioritize the work queue, be it at a project level or updating the Microsoft project plan or the sprint. There's always a multitude of stakeholders. Devs, sales, marketing, ops, all have needs and idea. Someone must be the arbiter.
I operate as principle on a project, and I have opinions, but I cannot set the roadmap alone
I operate as principle on a project, and I have opinions, but I cannot set the roadmap alone