Yes, it is absolutely hard to believe the average journalist knows more about anything than the average person does.

I view the average journalist as a person who is educated in writing blog posts accessible for wide audiences. Therefore I believe a journalist will be better than the average person at writing blogs.

There used to be prestige to this, not everyone could write a blog before the internet, there was a whole production involved and the costs demanded a certain degree of talent and effort for economic reasons. This is no longer the case.

Certain specific journalists, with an earned reputation, still have that prestige. But that's all them and their individual efforts.