The core issue is that most true experts self-select themselves out of blogging, giving speeches etc. Instead, most experts are busy doing the work they are exp

The core issue is that most true experts self-select themselves out of blogging, giving speeches etc. Instead, most experts are busy doing the work they are experts in. So what you get is mostly non-experts writing/speaking authoritatively, which unduly misrepresents majority opinion in a field. This concept is called The Silent Majority of Experts.