That wasn't my statement. Let me try again.
A 5 year software engineer may have more perceived value per cost than a 20 year software engineer. Sure, if they have the same salary, you hire the 20 year engineer, but they don't. The 20 year engineer expects more pay, and (rightly) won't work for 5-years-of-experience wages. So you have to find an employer that perceives the additional value of the additional 15 years of experience.