The gist of the argument is that it's worth spending some small proportion of your work time on exploratory work that might or might not pay off, as opposed to doing more "normal" work (another sprint task or whatever).

For me it described pretty well what I'd already been doing subconsciously for some time. I thought it was interesting to see it framed that way.

[0] https://www.bennorthrop.com/Essays/2021/always-do-extra.php