The mac desktop works on a totally different paradigm than the Windows-like model most other desktops have adopted. It’s built around
not managing windows and instead letting them be whatever size fits their content and pile up like papers on a desk, complete with having relevant bits of some windows peek out from underneath other windows.
For those it works for, it works really well. For those who came from windows always being maximized or split into a grid, it’s a nightmare.
Pretty similar to differences in real world desk styles, actually.