Very occasionally I bump up the font size a notch in Chrome to make things a little easier when I am tired. Even HN occasionally.
I've not had to bump it up _three_ notches before now. 12px serif body text in 2022? Ouch :-/
I'll get there one day I suppose and should enjoy it while it lasts, but for now most stuff really does look comically large and content-less.
Hacker News, and in fact this comment are 12px. Something's up with this site that's making it extra tiny.
Update: Proof - https://jdon.at/ZVirr2
What's extremely interesting is that on my laptop, HN is 12px when Firefox is full screen, but 13.33px when Firefox only uses the left or right half of my screen.
Yeah -- this is a common strategy for mobile rendering which on the face of it seems quite counterintuitive, but actually isn't.
Though this comment is not 12px Serif, it is 12px sans-serif (and Verdana at that). Which makes a really significant difference with small fonts.
It's also not body text on a blog article; this size of text is really too small for long-form reading (which admittedly includes all of my bloviating HN comments, natch)