Nothing of course, but if you are young and dont know about sourceforge or any code search engines what else are you going to think? Today's github boosters will be shaking their heads 10 years from now when they hear someone make the same claims about thenextnewforgehub.
Not an uncommon situation in my experience. Hiring in the valley has never been less skillful or less transparent. Even if you are not a developer and you do have many successful projects you still have to answer sometimes rediculous questions from people who really don't know any better.
Even professional recruiters are at a loss as to how to deal with this.
Don't forget teco. I believe teco was the most popular editor, in unix, before vi.