This advice may make sense for those aspiring to climb the corporate ladder.  But there are many employees who do not aspire to the grief that comes with being a supervisor/manager.  Good technical skills don't always make for good management skills, and lots of people lack the skills or interest to lead others.

If you enjoy and are satisfied with your job, you are one of the fortunate minority.  There is nothing wrong with enjoying the ride for as long as it lasts.  Nothing ever stays the same indefinitely.  If circumstances change such that you are no longer satisfied/motivated and don't look forward to going to work, then it's time to move on.