As a retired officer, this is at best tangentially true for warfighting roles. The more senior you get, the more you end up in staff and headquarters roles where plans and reporting become more of your role than direct operations.

But to get there you have to compete and succeed in a stack-ranked promotion system where your tactical and operational skills are what set you apart.

The us has been enough 'i can't believe it isn't a wars' lately that competence has some bearing, though powerpoint likely is valued too much.