This article comes down to “as a developer not all my experience is relevant anymore, but some still is, and you should stay up to date”. That’s never not been the case.
You're not wrong, it has always been true, but actually internalizing it as you grow older is hard, and rare.
It is very difficult to let go of some hard-earned experience and acknowledge that it's no longer much of a factor.
There are lots of examples, but the one that springs to mind is download file size. 30 years ago that was critical. Today, meh, 10 megs or 20 megs doesn't matter.
No clearly (before all us old folks have a heart attack), yes size still matters to a point. But in truth that point is waaaay higher than we'd like to admit.
And of course this is not limited to tech. It applies to every industry. My dad bemoans the fact that he can't tinker on his car the way he did in my youth.
The real secret is not in knowing the summary of the post, the really hard part is in figuring out what still applies and what is obsolete.
