Edit: Oh, now I see, you're complaining about the useless Bieber and Gagas of the world, so you're probably a small handful of years younger than I am. There were plenty of fantastic bands that predate the Bieber/Gaga era. I think your frame of reference is a bit narrow.
Now here comes you to his rescue, you white-knight you. You also seem to have an opinion worthy of a music critic ("okay"). That's great. Good for you. Go read some critics' opinions and go tell them they're all wrong and you know good music when you hear it and that Radiohead is just "OK". I really couldn't care less if you think another band is #1 or if a critic does -- just GENERALLY SPEAKING, Radiohead is probably the #1 band of the last 20 years. If you can find critical reception to another artist that is just as great if not better, good then you beat me.
Then there's me, oh poor me who doesn't know anything about the music world and thank God you're here to correct me. Just by your opening sentence ("I grew up listening to alternative music"), I probably have listened to 5x as much music as you. I've been in love with music since I was 13 religiously downloading and listening to as much as I can. You have no idea who I am, but you feel compelled to defend a pointless comment so you can patronize me.
For what it's worth, most people who don't like Radiohead or call them overrated, in my PRETTY DECENT amount of experience of talking with music lovers is that they're usually into metal. That wasn't some attack you overly-sensitive man, you.