Having been trained and acted as a scrum master for a large tech corporation, this doesn't track with my experience at all. I, and the other "scrum masters" (which is an incredibly cringe term) I knew tried to minimize process as much as possible, and weren't concerned with finding busywork to "justify out position" -- especially because our positions were primarily devs. Being a scrum master was extra work on top of our daily duties.
In my opinion, the problems with Scrum are because of how Scrum works and what management wants to use scrum for. Being a scrum master was what convinced me that Scrum in particular is extremely problematic and that if you must use an Agile methodology, it should be one of the other ones, not Scrum.