I believe the perfect example of "noobs" in the SRB2 fandom would be the Skybase. A retarded "safe haven" for the lost souls that were once users on this lovely SRB2MB. They outright refused to listen to reason, given infraction after infraction, closed topics, and other things that led to them either quitting, or being banned.
The term "noob" does not need to apply to games, it can exist in many ways, from lifestyles, to sports, to, well, the internet. Someone learns of it in a certain way, and will outright refuse to accept any other means, regardless of the efficiency or sensibility.
When the term ends up being appropriate for a certain person is a big fat never. It is 2012, this term is basically another meme that has gone flat, and people still seem to be pumping air into it. Honestly, if I could e-Slap people, anyone who ever uses "noob" in the intended context would get it in a heartbeat.