Plain and simple, they're a band.
Made up of Joel & Benji Madden, Paul Thomas, and Billy Martin at the moment.
Like any normal people, they shift and evolve in their styles and such. It's human. Each of them has a rather distinct fashion, ranging from brilliant liberty spikes to shiny hip-hop get-ups.
They're being themselves, exploring their tastes and enjoying themselves, trying on every look just like you did in front of your mirror. For GC, though, we're the mirror.
They're not poseurs, because they're only claiming to be Good Charlotte. Indeed their musical style's just teeming pop and punk and whatever. It's not quite so condensed into such nimrodical labels.
True, they sing about sucky lives while right now we'd all like to be in their place in a happy little mansion-type place, but they did used to be living their words. It's not like they've completely ground out all memories. They can relate to so many, because countless people these days lack money, lost a family member, whatever. It's not like you'd go and continue sitting in a cardboard box (hush up, obviously an exaggeration, don't jump on me yet) if you had the chance to totally improve your lifestyle just by doing what you adore.
No, they're not just MTV clones for preppy losers. I only know perhaps three people who like Good Charlotte. Everyone else simply despises them. And out of these people, I only know one closely -- one of the others, I know, used to be lovely and herself and rather preppy, but has succumbed to ICP and stereotypical black hair. But the one I do know does indeed lead a sucky life, but exudes utter love for Good Charlotte, plus many others who she genuinely appreciates, such as the Sex Pistols, Green Day, and The Killers especially. My friend's got a mom who recently broke her door she was so damn upset at "how fucking ugly your face is," an alcoholic father who doesn't hold stuff back ("Why the fuck are you dressed up like that? You look ridiculous, you look like a freak."), a whore of a sister. Honestly, very few people like her at school. Very few. The rest find her bizarre, don't get her sense of humor ("No, I am a lesbian." "From now on I'll call people who are idiots fruitstands, ha." "NO MEGAN NO."), disgusting, perhaps. She's definitely not pretty, not skinny, none of that. Plus she's currently living in a literal little trailer park. Fun.
What I'm saying is, go make your fucking judgments, don't soak up what you hear here, about the mindless hypocrisy and whiny attitudes of bands you most likely don't know a goddamned thing about.
"Wtf, Good Charlotte blows." -- someone who has heard perhaps one song, loved it, and discarded it because everyone else has (namely this guy Dylan)
"SHUT UP YOU FAT FUCKING WHORECUNT." -- the enraged reply of a certain someone to something along the lines of "What if Joel was hit by a bus?"
"omg benjy maddin is sooooo hotttt!!!!!!!!!!1!!!!!!1111111111" -- the unfortunate imbecile's opinion