Imagine if every John Gruber article worthy of making it to the front-page only ever made it to the front page after being laundered by a site like CNET? I think everyone can agree that we would be worse off without the original voices.
One of the biggest losses of not having original voices, even from the most biased of biased bloggers, is that it also dilutes the counter-arguments of those on HN that provide the balance to biased articles. For example, a direct link to Florian Meuller's article may elicit a response from a contributor like yourself where you point out where Florian's analysis may be wrong and shouldn't be trusted. Without Florian's post to rebut, it's more likely that people like yourself would remain silent on the issue.