There's certainly some of that, but the long tail of the Internet means there are all sorts of communities and real-life meet ups of the strangest obsessions where their interests are celebrated, not made fun of. This means it's safe to declare your weird obsessions. Even if you're family doesn't understand it, they don't have to - theres a community to connect with, whereas previously there was little/no such ability, and Nerd interests were shunned. Now they're the feature of Comic Con, SDCC, Pax, etc.