Yah. True.
I guess she wants to get around the occasional 'false typing'... the DVC is used in fashion events and stuff, and I guess it would be just helpful to the models and the backstage manager if they could switch to channel 9 for so no typed text goes to chat by mistyping. During events you often see something like
That's no good to appear during a show.
Replies come back from DVC HUD via OwnerSay() anyway, so I guess just the 'type to a different channel than 0 by default' would be the only thing they really need.
I think that's how it works in Firestorm.
Or someone should make a new DVC version using the llTextBox() command so you can type your chat stuff there. But I guess that is not going to happen.