I often see an inverse correlation between being able to "talk about code" and actually producing good code.
That is not only between persons: I can get myself into a talker's mindset in a couple of days just by reading, drawing diagrams and generally doing anything that increases self confidence.
My actual coding abilities drop in the process because the ability to see abstract graphical patterns decreases.
On my best coding days I'm barely able to utter a coherent sentence at the end of the day.