To OP - i guess it's a good idea to start working on yourself to be able to continue education in more high-class place. Dumbasses will be filtered out well enough and more people around you will have at least slightly developed tastes and opinions in all sorts of things. You'll still get your share of nyancats and afroninjas from those who only use internet for facebook msging, but it'll be much more tolerable when you have lots of interesting people who balance things out.
I've gone through a similar situation actually. Growing up in a little village without going to kinderdarden, spending time reading books all the time and playing pc games (video game translations didnt exist back then, so i had to learn english to understand Doom plot, ololo), becoming introverted as hell... then entering school and getting my mind blown by the fact that almost no one knows how to read or count to 10. And it only went downhill from that, which made me hate people and start to think i'm better. In high school almost everyone was only into mainstream/pop/casual things, being unable to understand anything besides that. In addition to that, most fads here come from the West, and with a slight delay (even the biggest ones are delayed, like Harry Potter for example. First few books had been out for 2 years already, until they got heavy advertising campaign and suddenly everyone went from "bleh, whatever" to "hp is the shit!" attitude in a blink of an eye). So even if i liked some mainstream thing, no one else did; and vice versa after a while. Eventually, i convinced myself that i'm better than anyone else regardless of what i do and how i do it, in an act of a mental defense, and started to turn into a slacker and degrade.
Luckily, in my last year of high school i passed exams and got into probably one of the best schools in the region and it was like a breath of a fresh air after all those years of living in a vacuum. It made life more fun and, more importantly, changed me as a person into something better than a worthless wannabe elite dork.
So, if you're afraid it'll be hard for you to endure living like you do now, and that you need more mature (in some ways) peers, this is one of quicker solutions. It'll either teach you that you were wrong or will fit you well. Or both, one after another, like in my case
I think the main problem is that he thinks they are only capable of discussing media bombs and being unable to search for & learn stuff they're themselves interested in. Most often, gems are hidden deeper, but people are too lazy to look for them. If you're one of those who try to dig gems, it's hard to live around people who can only walk on a shiny surface. About as often, our ignorance makes us assume that others are surfacewalkers, while in fact we're just not looking deep enough ourselves. So, both opinions are understandable and it's a hard topic to discuss :S
These people are just having fun discussing things that they like, what's wrong with that?