That's called experience. This is the reason why senior developers are normally paid more and make the important decisions.

And what the article tells is that you should actually get interested in what you are doing, if you want to become experienced and not just old. That should be common sense, but I guess it is worth repeating from time to time.

However, if you don't have 30 years of experience, ranging from coding on a C64 to modern JS frameworks, the Lindy effect (older technology tends to stay longer) is a good shortcut.