What difference does it make if they heard of it, or how rare displays are vs pen/paper coding? I imagine most everyone at this point has heard of e-paper and e-ink displays, but the author clearly dropped the "e" to make it sound more intriguing.

Would you be asking the same question for a post titled "Drawing with Ink", but it linked you to a page about drawing with an e-ink display? Of course not. It's misleading.

Really? Coding with pen and paper is very normal from my perspective. How else to you brainstorm with a colleague?