Any MMO player who knows what they're talking about probably has a lot of social interaction via their game of choice. This is also true of console games, but is forced with an MMO.
Sure, but where's talking about video games going to get you?
Personally, I have learned that video games are a big waste of time unless you play it with your friends (brawl). Seriously, in RPGs, you level up to a really high level and waste a whole bunch of time on it. It really doesn't help you in any way except a way to pass the time. If your playing with friends face to face, there's also communication and bonding involved. Don't stay inside wasting your life on a video game.
Go play a sport, Learn an instrument, mod a nerf gun. These things are much more worthy of your time.
You can learn a lot more by not playing video games.