Comment by nrvn
The whole article is tongue in cheek. And I struggle to find any comment here that would actually verify and confirm (or not) the results of the author.
So here I am, random hacker news links verifier.
Scrolling to the image below "So, for example, grabbing it here does not work:" text and reproducing the issue with a small caveat: just moving cursor 1 (ONE) pixel right turns the cursor into the "diagonal resizing mode" cursor. Overall, the resizing area of the window corner is comfortably bigger than the author draws. Dragging empty space outside the rounded corner is weird but what isn't in today's user interface designs?
All in all have never experienced difficulties resizing windows in macos.
Miss the times of windows 95/98 and macos 9 (as some other commenters here) when OS UI was designed by humans and for humans and everything was explicitly clear including the area for window resizing.
I agree with this. I was curious and tried it out just now - there's a good part of the inside corner that is draggable and a decent amount outside as well. The cursor changes to indicate resizability make it quite difficult for me to make a mistake here.