May be it's just me but I tend to value "authority/expert/background" less and judge the actual delivered content by itself. Trusting content by its "background" is just intellectually lazy. Question authority. That's part of critical thinking I've learned long time ago.

Lionhearted (Sebastian) has delivered outstanding insights time and time again. Many thing he said has struck a chord with me. One of his best blogs was that it takes many ordinary writings to hit a gem piece. And he certainly practices that.