I think that has to do with the fact that we don't really have any newbies anymore for two reasons.
The first reason has to do with the state of the internet. Back in the last decade (Yes, I mean the early to mid '00s in specific), the internet wasn't as widespread yet as it is now, so people made the best of their privilege, going on tons of forums to talk about vidya games with their fellow dudes and dudettes. Nowadays, most people (that live in places where internet isn't a rare commodity) have internet, so it's not really special anymore. (That's a bad way of conveying my point, sorry.) You can just talk about video games with some people on Facebook, or YouTube, or Tumblr or whatever you kids use. It seems like actual discussions on the internet nowadays mostly only take place now in comment sections. Forums just aren't popular anymore.
The second has to do with the state of Nintendo now. Back in the early-to-mid '00s, video game journalists largely ignored Nintendo (except for a couple games, and maybe when it came to handhelds) to focus on the Xbox and especially the PS2. I remember being particularly alienated in elementary school by G4 (X-Play in particular), which didn't show much for the GameCube at all. Nintendo fans sorta had to "stick together" during rough times, and congregate to talk about Mario and stuff. Now, Nintendo and Mario are popular again (though the former seems to be wading thanks to lackluster sales performance of the Wii U, the latter doesn't only because of increasing reliance on "retro 8 bit nostalgia" these days), so who needs to use some old forums on "themushroomkingdom.net"?
I realize that some of this stuff about the sixth gen is perhaps a bit before my time, but remembering how disappointed I was watching X-Play and seeing yet another episode entirely with PS2 and Xbox stuff even though I only had a GameCube helps me learn and understand. Basically, I think that because of the changes that vidya culture and internet culture have undergone, Fungi Forums are perhaps..."dated", you could say. Not that that's a bad thing; I may be in high school during the age of twitgram and youbook, but I'll take message boards focused on a central topic any day.