I had the exact opposite reaction. I’m reading this on an iPhone SE2020, and I MUCH appreciate reading this in pdf form. I didn’t have to pan back and forth or even put the phone in landscape orientation. This is one of the smallest smartphones you can still buy, and the experience of PDF is WAY better than the user-hostile auto-flow text forced down mobile users’ throats.

I was skeptical at first, but I think the author made the point fantastically well.