Not everything that seems "interesting" is worth it to learn from an economic perspective. Could it be worthwhile for someone studying for the A+ Computer Technician test? Maybe. Could it be worth it for someone looking to impress their boss Harry? Possibly, if Harry also controls your pay and has a penchant for overpaying for locally run infrastructure and a distrust of the cloud. Possibly. These kinds of investments are based evaluated at the individual level --- not everyone will benefit. Some may find themselves no more competitive in the job market as your average IT clown, but as always, results will vary.