On both Windows and macOS, windows are clearly delimited by drop shadows. You have to go out of your way as a malicious app developer to explicitly disable that.
I haven't interacted with a scrollbar in decades. Its purpose in 2024 is a visual cue.
As for Powershell/Terminal, assuming the screenshot wasn't timed deliberately, there is no caret which implies it's not the active window.
It's shading, but the worst kind of shading.
I disable window shadows with extreme prejudice because I find them visually painful. They obscure something I should be able to see without meaningfully highlighting what I want to see, which instinctively strains my eyes.
What the sincere hell was the problem with a simple, thick window border?
>Its purpose in 2024 is a visual cue.
Yes. They are practically non-existent in most environments.
Hell no:
I can't tell what is and isn't a button.
I can't tell specific areas apart from others (no borders/shading).
I can't see or use the scroll bar, assuming one is even present.
I can't tell where a window begins and ends.
I can't tell which window is active.
I can't tell what a window is for.
I can't tell what the fuck these Nouveautian Hieroglpyhs from Uranus (aka icons) mean.
I could go on, but I digress: Are we in a pretty good place? Hell no.