Remember his blog post about walking into an Apple store and harassing (and then writing a long blog post mocking...) a poor retail employee because he wanted a laptop of a specific weight, they were understandably a bit confused and thought there was some sort of XY problem and asked for more information......and for some inexplicable reason he could not simply take 15-30 seconds of his life to detail the need to them? No, see: Dan Luu is Very Important, Very Very Smart and Completely Unique Needs and you are just a lowly NPC service worker who could not possibly understand his needs or brilliance. And he never explains himself in that article either, because he's a troll.
The problem in the screencapped comment is the groundless accusation the information is incorrect, not asking if it's still correct. On many, many technical subjects, information that is five years old is uselessly out of date.
I've pissed away hours because I trusted a writeup or forum post about a problem or configuration method that stopped being relevant or even correct years ago. These days if I'm searching on almost anything technical, I immediately select the "last year" filter on google, or throw in the current year in quotes because I've been so consistently burned by this problem.