It's because they removed the original exercises & demos videos a couple of years ago!
I think you're right, the newbs see their own gyms as a reputable source for information and community so they don't come here as often or at all. I myself am also an example of someone who has done that very thing. We have several blogs and community pages in my gym let alone add to that the Facebook, Instagram, Twitter, etc. sometimes it's just too much to keep up with!