That's really the MacOS vs MSWindows disagreement, and then the "whom should we emulate?" disagreement among Linux desktop people. Oh, and the OpenWindows and CDE people before them.

I'm biased, but I think of this as another one of those "well, Microsoft got it wrong, but people are so used to it now that we have to perpetuate it or we look like we're just willfully antagonistic" situations.

User studies can be produced to prove either side, of course.