Jeff Sutherland said "The Scrum Master job was designed to be a half time job. Most of the great Scrum Masters I have worked with have been on the team doing sprint backlog." August 2021 https://lnkd.in/eDx7dbYr

I've been saying this for a long time. The Scrum Master is only half a job and the rest of the time is best spent helping the team define and manage the backlog - effectively being a Business Analyst for the team. This is why BA's make great Scrum Masters.