Agreed. I've pinched his popup implementation for my homepage and expanded it a little so that there's both a footnotes section with anchor links at the bottom for non-JS use and search engines, as well as the popup panels. E.g. https://www.buttercookie.de/The%20Burkiss%20Way/Transcripts/...

Oh thanks, I really like this variant. It needs a name: click-to-hover, perhaps?