That's ridiculous. Arnold is not replaceable in any of his movies. It won't be anything close to the original. I've been to the movies maybe twice in the last two years. It's all regurgitated crap. Everything new that comes out is garbage. Even the new pop stars that come on the scene these days are just manufactured props like Lady Gaga and Justin Timberlake. They have no talent and even $100K worth of studio equipment doesn't hide that fact.
You know little about music if you think Justin Timberlake is not talented. His music might be boring to you, as it is to me, but nobody can deny that he can sing, compose, and play various instruments.