[ordinarily]

Horizontal space is still a premium regardless of monitor size when designing/building for responsive viewports. Vertical space is almost zero cost in terms of design constraints.

Even on large monitors you'd be surprised the number of people at 150% zoom with small windows opened instead of fullscreen.

[conductr]

Being able to scroll on unfocused applications has been a game changer for non-fullscreen uses. I never zoom though, except HN