This is one of the roles that I passionately hated in my previous company. No value add, and just wasted time with meetings. If your team, product manager, eng manager has no clue on what they are doing, then yes scrum master's role has a concrete outcome (atleast to keep people busy working). but if any one in the team has any clue on what they are doing, I found no value. Most of the scrum master/agile coaches i interacted with are more married to the whole process of scrum ceremonies rather than the concrete goal they are trying to hit at end of month.
