Every time I hear people respond to a traffic report with "we have him on TCAS", I do wonder what they are saying exactly. I don't see the relevance of that statement.
Agreed entirely. I cringe every time and hope I'm not too near to them, in case their ignorance includes controlling their aircraft in the vicinity of others.
Probably the same muppets who "stand-by for descent".... (And they tend to be of a native-speaking northern variety, giving lie to the belief that native speakers are any better than others at standard phraseology).