There's truth in both Hiten Shah's words and your own. There is one aspect of the scrum master role that is essential: that of a change agent. Organisations wishing to improve the way they work need someone to focus wholly on that improvement. Not on product, not on technology, not on people-management, only on improvement—in all its forms: personal, relational, environmental. Without such a person, who would hold the big picture there is a danger of local optimisation, and great disconnect. A good scrum master (there are painfully few) would focus on this. It may be better to rename the person who does this though, and separate it from Scrum. Scrum itself may be going down the drain, but don't throw the baby out with the bathwater!