Not to nitpick, but isn't news supposed to be objective and opinion not?
It seems kind of weird to wander into an opinion piece, then seem put-off that its author might be biased. Yes, it is very likely that if you check the author's background, then you will find threads that are consistent with the opinions expressed in an article that he/she produces. In fact the article itself is an expression of that background.
Again not being a pedant here. Just don't understand the admonition to check the background as the basis for dismissing a writer's opinion.