I'm sure there are. They are everywhere, but they are probably the same ones that have horrible table etiquette too. Not everyone chomps gum just like not everyone chews with their mouth open. Is it a bit unprofessional...yea. Is it disgraceful enough to be called all that í ½í±†í ¼í¿½... Absolutely NOT.
I've learned that chewing gum acts as a filter so I say less inappropriate things. Wish we had something that filtered the fingers of these typing critics. Who knew gum was whore-ish? Chew away!