Let’s take a look at macOS Tahoe’s standard curve for window edge:

Hm… What’s this?

WHAT IS THIS?

Ah, no worries, it’s just a window edge of an app that hasn’t been optimized for Tahoe’s Liquid Glass, that’s behind Safari. (And there will be a lot of these apps in the next couple of years, I’m sure). But what it highlights is that because of these curves, the space actually gets wasted. And if you are working on a 13-14in MacBook screen, all of these curves add up, chopping off useful screen estate.

It’s not much better with no other app’s window behind it – just wasted pixels:

IMO, these large curves in macOS Tahoe reduce usability of the UI. They increase wasted space, lowering information density. Content alignment becomes inconsistent, since rectangular windows, lists and other rectangular objects don’t map cleanly to oversized curves. Peripheral vision is forced to process distracting shapes instead of functional elements. Accessibility suffers because curved areas can reduce contrast and create irregular hit zones for controls. Net effect: less efficiency, more eye strain, and lower clarity.