Yeah I read it and didn't get the point. So agile is dead? And we are now doing waterfall due to Ai needing unambiguous specifications? But also agile was nothing new because they knew that waterfall didn't work in the 70s. But now it works? Or are we still doing iterative development but the term agile is banned as unoriginal?

I am not Kent Beck; I don't have all the answers.

All AI has shown us is that we should probably write specs before we code. That was true before AI, but LLMs have just shone a light on this, and it will remain true if agentic coding falls out of fashion again.

Never once did I advocate waterfall...

Read the Royce paper, seriously. It's short, he's a much better writer than I am, and if nothing else it's a fascinating looking at the old state of the art.