Very interesting article, Steve. I especially enjoyed the analysis on the Vox website.
Here at work we're taking baby steps towards introducing Agile project management. Good for us. Waterfall has been done here for many decades, so it's slow going. Unfortunately, my view is more from the outside, looking in. Being a large IT department, there's people (BA's) who get to know what's going on, whereas the rest of us are basically kept in the dark. However, I think, looking from the outside, in, that the temptation to know everything, such as you would try to do with a Waterfall approach, is still very prevalent. It appears to me, again looking from the outside, that there's a big temptation to get involved in "analysis paralysis", rather than, as you said in your article, adopt "... the idea that we don't know everything about how to build our software when we start."
Kindest Regards, Rod Connect with me on LinkedIn.