The use of “full-stack” was the first thing I noticed. Everyone, please stop using that term. I’m pretty sure, with a high degree of certainty, you don’t know what it means. If you do, there’s a merit badge waiting for you. And can we please stop using “hallucinations” to describe output. Yes, it may look like your tool dropped acid, but that’s not what it is.
Well, quantity has a quality all its own. Extending the sprint to wait for the person to complete their PhD as part of the "research" part of the ticket would not quite be Scrum.
I now think of the "stack" of a modern business as starting with physics and ending with making someone happy (unless you are Oracle). Full-stack engineers should then know how to connect physics to peoples' happiness.