@alg0w I'm not sure if that's it. If you look at macOS UI on their own laptop or desktop monitors, things are reasonably sized. And things that used to be normally sized, are small.
That's not just subjective experience - their desktops are ~109 PPI (after scaling), vs. ~96 on normal screens. So everything is a good bit smaller than it used to be.
What I wonder, is if this will be the new normal. If I get e.g. a 32" 4K screen now, at 96 PPI after 150% scale, will more and more things start looking oversized because designers are using and targeting 109 PPI (after scaling), and should I instead get a 27" model? But then 'classic' software and sites will look small.