A keyboard warrior, sitting in a dressing gown in front of a computer screen, can't do that. A blogger is about opinion. Now, it can be good, researched opinion, but it's just one side. A reporter's job is to get the other side.
I see a great deal of anger in blogs, in Facebook posts, in postings in the comments section on the website.
I suspect some of that anger is because they have all this publishing ability at their fingertips, thanks to the internet, but it carries no more weight than an opinion in a pub debate. And generally, there's a lot of anger in people today.
The internet has allowed people to be "brave" behind a pseudonym and the ability to be able to express a complete argument without interruption. Given that, many choose to express their anger.
Journalists may or may not be angry, but their training keeps them on point. Reporting is infinitely more satisfying, is a great deal harder to do and has the weight of integrity. When you get past the anger on the internet, read the news.