The article starts out about hypocognition but ends up being about availability of vocabulary to express certain concepts. I would argue that many people can still fluidly intuit a concept even if they don't have a convenient shortcut to express it. Of course, the unavailability of a linguistic shortcut can also point to a poor and unformalized understanding of that concept.
On the other hand while "hypocognition" seens to be an neologism, the concept has been the bread and butter of anthropologists for the last century ...
one only has to spend a little bit of time with a dog to discover hypocognition in action. in fact, seeing how little my dog understands how the world works (simple things like how to get a ball when it's rolled into an empty box)...is diconcerting because humility suggests the same must be true of me. what painfully obvious things about the world around me am I just oblivious to?