The commenter above implicitly rejected intermediaries. To me it is clear that my browser is a trusted intermediary, and part of my trust in them extends to letting them decide whether to trust IdenTrust. And part of my browser's trust in IdenTrust extends to letting them decide whether to trust Let's Encrypt.

In the yak-herding analogy, Let's Encrypt is a new charity in Ecuador that provides market services for scarf knitters. IdenTrust is a large regional trader in South America. My browser is the local yak-scarf store down the street. It seems totally obvious to me that, in this case, of course I'd hear about IdenScarf making deals with Let's Shave Yaks on the news. But the parent commenter is unhappy about the local yak store not being directly involved, and thinks it's some form of failure of the global yak-scarf supply chain that an individual consumer isn't part of that conversation.