Verbal shorthand.  It’s efficient… until you start using “How are you” in place of “Hey.”

Similar problems in our current society comes from using “@#$%” (you know what I mean) in place of any random noun or adjective (depending on what dirty word you just thought of)

Or in marriage, when you become careless with your thought and time, and “I love you” takes the place of “How was your day” or “Hey” or “Have a great day at work.” or “How did I stomp on your feelings without realizing?”

Verbal shorthand.  Like most things, it’s a strength and a weakness.