Every single music artist that is hated by anyone gets pointless hate. And that includes Justin Bieber (oooooh, controversial!). My reasoning is as thus. Music is subjective, just like art. Everyone has their likes and dislikes. And thus saying something is bad does not necessarily make it so. If you don't like Justin Bieber then that's fine. It doesn't make him bad, it just means that you don't like his particular style, whereas plenty of other people do otherwise they wouldn't be famous or successful in the first place. And besides, regarding the actual music, Bieber is actually a pretty good singer. The only thing about him I don't like is the fact that he's effectively been manufactured by the corporate bigwigs after they found his (good) videos on Youtube. If he'd been left to achieve fame naturally then he'd get much better rep. The guy does actually have talent, whether he sings 'your kind' of music or not.
Of course, posting logic on the internet is never a good idea, because nobody ever listens, so although what I say is truth and fact and makes sense, I have no doubt you'll all just ignore it for the sake of being pretentious hipster twats who refuse to even consider the possibility that something they don't like is, God-forbid, actually any good.
My little rant aside, I would pick one band in particular who don't deserve the hate thrust upon them, for the reasons stated above and for others. Nickelback. Thing is, they're a decent band who have a lot of fans, and yet for some bizarre reason they're lauded as being exactly what is wrong with rock music today. Never mind that they've won numerous awards, released multiple bestselling albums, released songs for films that were box office hits (well, Chad Kroeger did, at least...), and done work for charity too. And all the while managing to actually, you know, have proper musical talent...
Oh, and while I'm ranting in these little asides, I may as well mention another group of bands that get undeserved and pointless hate. Any band that ever dares to change their style in any way, even the most minor way possible. Everyone loved Linkin Park, Greenday, Muse, Arctic Monkeys, and so on, when they were in their early years. But then over time these guys developed their sounds and made changes. Subtle, and it took time, but still, changes. Linkin Park did it with Minutes to Midnight. Greenday did with 21st Century Breakdown. Muse with The Resistance. And Arctic Monkeys with their latest album, Humbug.
But the thing is, if these artists hadn't developed their styles into something new then so-called 'fans' would still find something to pick at. They'd be complaining that the artists and bands are getting boring and generic, that they refuse to change their styles in any way. Think about it. Greenday have been around since the early Nineties, of course they'll have changed their sound by now. Muse have had what, five albums? Linkin Park and Arctic Monkeys had both released three by the time people complained about them changing, with LP having just released their fourth album within the past few months. It's perfectly natural that their music styles would have developed and evolved. My point is, the idiots calling them out for changing and 'selling out' are just trying to find any excuse they can to complain about something that has done no wrong and doesn't deserve to be picked on like so.
And as my final rant, any band accused of 'selling out' without due reason is getting undeserved hate. An example. My brother used to be a massive fan of both Muse and Paramore, as am I. However, then Muse were asked to do a song for the Twilight films, because the author is a big Muse fan. They allowed the film-makers to use one of their older songs for the first film. Paramore also offered to write a song, because their lead singer is a fan of the series. Now, since said frontwoman, Hayley Williams, is a young woman who lies in the target demographic for the series, that's also perfectly acceptable. However, my brother decided that because each band has contributed in some way to Twilight, they are instantly sellouts. He tries to justify this by saying that they deliberately used Twilight to boost their fanbase, something that isn't true at all. Of course, I wonder how he'll react when he sees the bands he's a fan of that have also donated songs and whatnot to the series (Radiohead, Bombay Bicycle Club, The Killers, Editors, Vampie Weekend, Florence and the Machine, etc...).