They don't seem to be significantly younger or more inexperienced than other journalists. However, they don't have journalistic heavyweights that do month-long investigations or pump out one price winning report after another. Those are rare anyway.

I know that they use a lot of stringers that remain unnamed. It is not unusual to have freelancers do research without naming them but as far as I know they also contribute whole articles. Likely these are people that also work for other news outlets.