It's like talking legalese vs plain English; or formal logic vs English. Some people have the formal stuff come more naturally, and then spitting code out is not a burden.
So yes, there is a level of mastery that is beyond being able to do a good job of designing and evolving complex systems which enables people to teach others the same skill set.
However, this is a smaller number of practitioners, and most have learned through practice and looking over how more experienced engineers apply their knowledge.
Where I disagree is that this means everybody is equally capable of teaching with words, or that there are no experts who are bad at teaching (humans or directing AI) — this clearly indicates it is not encoded as words for said experts.