I'm in my 30's and one of the younger people in my department. I work in Engineering. I don't use Github I do not know anyone personally who uses it. I think it is probably a generational thing.

Search engine result as well I'd be suspicious of. If I am searching a programming language it is something I don't use very often thus why I am looking up the information. The languages I use the most often I have stack of books on my desk rarely need to look anything up with a search engine.