I guess it depends on how you view terrestrial radio...I think it's a service industry (and yes, I work as a DJ/occasional sports personality). If the clerk at the supermarket gave you attitude for saying "How are ya?", wouldn't that rub you the wrong way?
Radio is a different job, but Joe Q. Listener is ostensibly your boss - no listeners, no advertising revenue, no job.
Calm down.
Dead air is dead air, pleasantries are white noise...not ideal, but 10x better than the on-air personality rudely telling a caller "get to the point!".