In the evolutionary sense languages, I agree. But there's also a lot of people who strictly disagree with slang, "verbing" and other colloquialisms - instead believing language should be applied strictly (people otherwise known as "language Nazis").
My "performant" footnote was just an attempt to pre-empt such attacks; though ironically including the footnote has now sparked the tangent itself.
It's a fun thing to point out to those people how many of the words they're using to lambast you have actually changed meaning or are new words. They get -very- flustered and sulky.