OP, as you can see the game is very polarizing. I think it's impossible to say either way because people have such differing opinions on the game. Some love it to bits, some think it's meh, some hate it. The best thing to do would be to make your own opinion of it, but by no means is it a bad game. I don't think there exists a bad Nintendo-developed Zelda game; they are all of very high quality.
I'm pretty sure it was because they made Link right handed. People hate that.
It's as much of an origin story for the Master Sword as it is for Ganondorf himself. He's not in it because he didn't exist yet but an equally badass villain is present. But they do something REALLY cool with the villain... man I love this game.