alt Hacker NewsNot to mention that the statement is wrong. Windows applications do NOT look the same, and that's bad.
Oh... except for their lack of a title bar, which prevents you from telling which application you're looking at. Is this PDF open in Edge, or Acrobat? Who knows. The windows look the same.
Beyond that... it's a disgraceful mess. You have applications now with no menu bar, but instead a bunch of hamburger buttons and "gear" buttons scattered all over the place. And common, standard functions like "save file" are further hidden behind "more" labels even in THOSE menus.
Another example of Windows's galling regression: the abolition of the File dialog in many apps, which have replaced it with a giant page of crudely-drawn, unlabeled, super-wide text boxes and a bunch of plain text. There's no file structure shown, so you have no idea where you are about to save a file... It's truly a clinic on dogshit UI. Pathetic.
Companies like IBM and Microsoft did a lot of HCI research back in the 80s, and made a lot of progress with usability and common idioms that all software followed. Then when displays with 256 or more colors became common, all that went out the window.
All those Windows Media Player skins were awful because they used so much screen real estate on dead space. Whereas the plethora of Winamp skins kept the economy of screen real estate while still providing unique and imaginative visuals.
The whole skeuomorphic trend starting in the mid-90s was similarly awful for the same reason. First, it was often hard to tell what was a control and what was just decoration. Second, it often took trial and error to figure out what was what. And, as I mentioned above, these designs almost inevitably wasted huge chunks of screen space on decoration that provided no functionality.
Of course, we have the opposite problem now. All windows look the same. Title bars are mostly gone. And since companies like Microsoft replaced all their HCI experts with art-school dropouts who think the "flat" look with low contrast is cool, not only can you not tell what app you're looking at. Half the time you can't even tell where one window stops and another starts.
The only good UI thing that's come out of the last decade or two is a near universal support for "dark mode". Otherwise, I would greatly prefer the Windows 2000 "classic" look, or something similar.