NASA Administrator is such a bland boring title. I wonder if that's intentional, to indicate the focus shouldn't be on management but rather on the engineers, scientists, and astronauts.
As the government evolved, the title gained more meaning. I sometimes wonder if the leaders of younger countries that use it understand its original meaning.
President doesn't come from the word "present" [1], and has been used for millennia (2ish) more than you're implying.