Can anyone confirm this last (supremely fascinating) quote at the end of the article?

" In sign languages such as BSL, you’d use your hand gestures, facial expressions, etc. to express things like that the walk was on a dirt road; it was nice out; and you enjoyed the walk, with it all expressed simultaneously. This non-sequential nature of sign languages allows for faster and more detailed communication, but has the drawback of being ridiculously hard to put into print, though attempts have been made. "