Calling a Meteorologist a 'Weatherman' is an Insult

The above comment is from Instapundit and it pertains to meteorologist Dr. Cliff Mass of the University of Washington. Dr. Mass has a PhD in meteorology. 

"Weatherman" is a term used for weather presenters who do not have credentials in meteorology. Al Roker would be a good example. "Weathergirl" is often used as a pejorative. 

In this case, applying the term "weatherman" to a university professor with a PhD in the science is mildly insulting. Please use the terms appropriately. Thank you.