Earlier quoted context omitted.
I think they didn't fix it because they didn't think it's a problem. I understand it might be hard to get used to if you're used to using applications fullscreen. But when you use a 27" iMac you kinda get why it works that way. I just have a lot of big windows and actually never want to maximize any of them. Partly overlapping windows also makes it easy to switch between them. So it actually suits the way I work quit…
Well on my main computer I am running a 34" screen with 3440x1440 in resolution. But when on a MacBook you really want to be able to maximize the window. Also, on my large screen, with Windows, I can drag any window to the side and have it maximize the space that is left which is just perfect.
In fact I pretty much use full screen apps and spaces all the time now, reminiscent of my UNIX setup with fvwm.