Whenever I read an article like this („I am a CEO, I run my company on Emacs / Linux / Xyz“) I am reminded of Peter Drucker‘s book „The Effective Executive“. He distills five (?) behaviours, one of them: „Effective executives start out with the question, “What results are expected of me?” rather than with the work to be done, let alone with its techniques and tools.“
Use whatever works to get the job done.