Branding/marketing oneself, how to make solid career decisions, and general job search type activities don't help you on a day-to-day basis like productivity and communication, but they can greatly impact the overall career trajectory and how you can maximize your chances of achieving whatever goals you have in your career (advancement, $, independence, etc.).

There are thousands of programmers who are incredibly good at what they do (programming), but aren't being considered for jobs because they don't know how to market/write/talk about their own experience. What to write (and leave off) on a resume, a cover letter/email application, LinkedIn profile, what to mention in an interview, how to define an accomplishment, etc.

Job searches, interviewing, negotiating, how to make good career decisions based on your goals - these are all things that don't happen every day, so programmers aren't all that likely to really get good at them. Most other professional industries don't see the volume of career change that we see in tech, where it's reasonable that someone could change jobs several times in a decade. Knowing how and when to change jobs, how to handle those changes, and making good overall career decisions is a skill many lack.