One way to look at the article is not everyone realizes that there isn't anything stopping people in some whitespace ignoring places like Markdown (or HTML or LaTeX etc) from writing prose more like poetry with linefeeds at clause level and other visually interesting places rather than just at paragraph level or at some technically simple compromise like 72-character word wrapping.
Which is sort of the reverse inference from the one you are presuming. ("I want to format this text, so I'll use tools" versus more in this case "I'm using tools to format this text anyway, maybe I'll flow it like I want in its raw source form to be what looks interesting / dynamic / poetic.")
Which is sort of the reverse inference from the one you are presuming. ("I want to format this text, so I'll use tools" versus more in this case "I'm using tools to format this text anyway, maybe I'll flow it like I want in its raw source form to be what looks interesting / dynamic / poetic.")