I had to look up Fitts’s law, and I’m not sure I get it. Could you explain what you mean?

basically; the speed that it takes to click a button is dependant on the size of the button and the distance from the cursor. however, buttons at the edge of the screen have effectively infinite size, as they can't be overshot. the most used actions should be placed there, as they are the easiest to click by muscle memory (particularly the corners, as they have infinite size in both dimensions)

on windows, kde, cinnamon, etc.; by default the bottom left is start, the bottom right is show desktop (this one i can't explain), and the top right is close maximised window. the top of the screen is also used for other window-related actions like minimise, restore, change csd tabs, etc.

gnome flouts this by having most of the top of the screen doing nothing (most of it is completely empty) apart from rarely used actions like calendar and power. and the bottom right and left doing nothing[^1]

did i explain well?

ETA: I kinda feel like mine was about KDE not being a fit for me personally, and yours was a slam on Gnome rather than a statement of personal preference.

nah it was very much a personal thing: some people like having a minimal and clutter-free feature set; i like having as many features as possible, because then i find features i didn't even know i liked.[^2]

as for the top bar: this one confuses me - it just seems objectively bad. but obviously it's not as some people clearly like it. i haven't had anyone actually explain to me why, though

[^1]: i mean they also ignore it in other ways, too

[^2]: i didn't know how useful a terminal embedded in the file manager would be until i started using dolphin, now i can't do without it