NeXTSTEP is peak programmer UI. It looks absolutely atrocious, even by early GUI standards.

Windows 95's success was in part because Microsoft put in the effort to test and write good standardised UI controls and configurations. Throwing a bunch of UI elements on a heap with pretty high-res (at the time) graphics makes for a good freeze frame in a movie but a terrible UI.

MS copied from everyone, like Apple did before them and Unix display managers did after them, but their copy was far from cheap.