Personally for me, before during and after the quarantine my use of HN has pretty much remained the same, I work with computers (like most of us here) and I check HN when I get a little bit of down-time, like while waiting for something to compile or waiting for a file to get transferred or something to finish installing,only thing that changed was during the quarantine I was working from home, the number of hours I worked, the nature of work I do and how I do that work remained pretty much the same.
So, I am guessing this is pretty much what happened to most of us as well? And therefore for a majority of HN users, our HN browsing habits probably stayed the same?