Yes, you would expect the armies of UX experts to be able to figure out basic consistency and discovery of components. Seems all the good UI research (using actual user experience testing) in the late 20th century has been largely forgotten.
http://prior.sigchi.org/chi96/proceedings/desbrief/Sullivan/... is a fun read. At the time, the very concept of a UI on a computer was itself alien to many of Microsoft's target users - they did a lot of user testing to come up with what ended up in Windows 95.
I miss the days of the Macintosh Human Interface Guidelines and when Apple actually more-or-less conformed to them.