George, he is talking about the BIG picture. Of course "in theory" nobody needs charts. But might as well use them since they do help! Nobody needs these forums, but you can find some good stuff here sometimes! Why not use it?
Actually, I think if you are looking over long term, like years, you don't need candlesticks. A line closing chart is all you need. But shorter term, like daily, hourly (even 5 minutes) etc, candlesticks can give you a looooooot more info than just a closing chart! For example, if a stock was creeping up to a massive resistence level, and then hits it, and falls back down and closes there. All you would see on a line chart is that the price hasn't reached that level yet, when it indeed has! (Of course, it depends on the timeframe). But on the candlestick chart, you'd see the price rise up to the level, get rejected, and fall back down to close, a good sign to short!!
So you see, it can help, but nobody is saying that they are another holy grail. Also, be carefull when learning new candlestick patterns like the "hammer" and stuff. It all looks different on another time frame. It's what the PRICE is doing, not what some fancy cool exotic price represention is showing you. That's what I think Rathcoole_exile is right about.