This analogy is fundamentally flawed, both literally and metaphorically:

  A surgeon isn’t a manager, they do the actual work! But 
  their skills and time are highly leveraged with a support 
  team that handles prep, secondary tasks, admin. The surgeon 
  focuses on the important stuff they are uniquely good at.

First, the literal.

Surgeons are managers of the operations they perform and heavily rely on the surgical team with which they work. If the author had any clue about surgeries, they would understand that the most important person in a major surgery is the anaesthesiologist, not the surgeon(s).

Second, the metaphorical.

The author goes to great lengths to identify "grunt work" as being "not the most intellectually fulfilling or creative part of the work." What they do not do is understand that there is no such thing as "grunt work" if, for any definition of work, it is valued without judgement.

But if a person identifies with being "the surgeon", with everyone else being "a support team that handles prep, secondary tasks, admin", then the post makes sense from an egocentric perspective.