Do you honestly think William Shatner’s Kirk could command an aircraft carrier or space ship in real life? you know that stuff about “wait just a minute” while he cleverly lowers the other ship’s shields, doesn’t work in real life.
Kirk was, by that time, someone who had EARNED his way up in the ranks. Like most naval officers, he actually knew a lot about his ship’s engineering. What a concept - a military guy who had military experience, instead of a kid in space.