"Agile as a whole" does not require planning poker, or story points, or burndown charts, or Fibonacci estimates, or Kanban boards, or any of that. Neither does Scrum. Google "Agile Manifesto" and "2020 Scrum Guide."

If it isn't in the 4 values and 12 principles, it's not required in Agile. If it isn't in the guide, it isn't required in Scrum.