I had the opposite reaction, but I'm on my laptop. It looks like they are using RevealJS (https://revealjs.com/ https://revealjs.com/). I mention that because I

I had the opposite reaction, but I'm on my laptop. It looks like they are using RevealJS (https://revealjs.com/ https://revealjs.com/). I mention that because I originally went in thinking of this as an "article" with an alternative UX, but in reality it's just a slide show. I did just try it on my mobile (Firefox, Android) and this format definitely doesn't translate well. I put it in landscape and it just shrink down the desktop site to fit. I feel like they should either encourage people to read on desktop or have an alternative mobile version.