Experience is not worthless but it doesn't necessarily correlate to skill. I've worked with developers who have been at it for 25 years who were mentally inflex

Experience is not worthless but it doesn't necessarily correlate to skill. I've worked with developers who have been at it for 25 years who were mentally inflexible and wrote awful, un-maintainable spaghetti code. I've also worked with experienced older devs with astonishing skill levels.