„Effective executives focus on outward contribution. They gear their efforts to results rather than to work. They 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.“
I am guilty myself falling in love with tools (Emacs, vim, iTerm, Notability, Evernote and whatnot). But I founded and led companies myself. The time budget of a manager is extremely tight. You need to cut back on those things that do not contribute to your key result areas.
On the other hand you have someone like Stephen Covey who reminds us to sharpen the saw to get better results (i.e. invest time in the infrastructure as well).
But I try to imagine an Elon Musk writing a blog post about how to use Vim effectively.