As a data scientist, I disagree strongly on this. Writing "typical" application code, sure, jupyter is (probably) overkill. But for cv, nlp, data sanitizing, etc, you are constantly iterating over algorithms and visually viewing the output. Multi-stage pipelines just require rerunning a cell.

Caching to disk is cumbersome for data that's usually junk.

Cells and integrated vis is such a massive leap forward that using plain old text feels like banging rocks together.