Windows 8 was when MS were trying to break into the phone OS market to complete with Android and iOS. They wanted to have the “same OS” across phone, tablet, and desktop, which isn’t a terrible idea except for the fact you need to betray your entire desktop customer base to get there.
Windows started life as a window manager that you installed on top of MS-DOS. It has since grown to be much more, and I don’t think you can criticise it for that.
Also, changing the visual theme is their prerogative. They are not required to supply a “classic” theme, even though they did do that a bunch of times.
I get Lemmy is the bird around here, but if you’re going to bad mouth Windows, at least do it for the many legitimate problems it has.