I'm curious if there's any existing effort to provide media on smartphones without scrolling. Not just “non-infinite scroll”, actually no scroll. Like, you have a page of text and to get to the next you swipe to flip, or tap a region (like on ereaders).

I think that would be an excellent addition to the iOS Safari reader mode, where your intent is already to change the behaviour and look of the web page. That reader mode has saved me from a really badly formatted web page many times.