It's clear that the goal is to capitalize on the browser medium's differences from traditional print media. It's definitely new/different. I don't think I liked it the first time I saw it but in this case it struck me as notably beneficial.
To me the point of an article is to provide textual information; I find most of the innovations get in the way of actually getting the info into my brain. (I originally put "innovations" in scare quotes, but they are new ideas, just for me bad ones. But that's the nature of experimentation).
The thing about reading is that, like recognition of 2D images, it's a learned behavior though one (more than image recognition) that appears to hack into some deep structures in the vision system. Breaking the text up like this ironically subverts those mechanisms which likely impedes understanding.
The outline.com version posted nearby is to me vastly superior, and an interesting comparison: https://outline.com/e3h5H2
As I looked at the pictures, scanning the text for callouts and deeper information, I found myself becoming very emotional.
The linked article tells a very powerful story through images, a story that touches upon love, adoption, middle America ("the heartland"), family, and race.
Either make your little UI experiment work flawlessly across all devices, or not at all.
It's worth the effort.