Potentially. So we agree there's nothing hip about Disney.com? I was trying to provide a counter example to the general thesis of the article.
The reason it really doesn't hold at all, in general, is because many websites (and particularly their contents, not necessarily the sites themselves) cater to different interests, and it's really not a surprise that people in different age groups have different interests. It's also certainly not surprising that Reddit caters to the interests of younger people more than Facebook does.