Well it sure is not still called "room text", once you have launched!
It is still called room text:
I think the main confusion comes from the fact that the list header of players withing "range" in the
Voice box is also using a purple font. This is the one that changes, because it's indeed vox that changes from "room" to a true "range" function when you change your location from tower to inflight. But this is the voice box, and the list contains only the people that are in voice
rangeThe text channel however is always called "room"