About 'parent bedroom', a lot of houses are occupied by house-sharers these days. Some sharers get the 'parent bedroom', others get the non-parent bedroom but they are all the same age. It makes some sense to change the description.
That's a utilitarian argument (I think?) that I could get behind (not that anyone asks for my opinion on what rooms should be called). From that POV I guess it would be best to just call any room that isn't a kitchen or bathroom just 'room' and let buyers decide. But then again, most people don't have much imagination and like to be shown how space can or is intended to be used, much like how a neatly decorated house sells easier than an empty or cluttered one.
But the objections I read about last summer (tried looking but I can't find it any more) were moral, that the term is also 'oppressive' (not sure if that's the actual term they used, that was the gist of it), basically the same arguments that are made for removing 'master' from Git, language frames our thinking etc.
