Don't know if they still do it, however the USAF used to talk all the time in a multicrew environment. Cant be all bad?
It depends on what you're talking about. There are things that need to be communicated between crew members and then there are things that should remain silent. If I say something to the other pilot, I need to know they've heard me, on the other hand I don't need to hear him announcing everything he's doing as part of a scan (while I'm probably concentrating on my own ****.)