You essentially say that a web dev and an GUI desktop programmer, are both programmers even though they can't do each others job, but a data scientist who progr

You essentially say that a web dev and an GUI desktop programmer, are both programmers even though they can't do each others job, but a data scientist who programs all day is not a programmer? That seems like a pretty arbitrary distinction. I would agree with the OP, that data scientists are often essentially programmers they just require a very different skill set than an web dev, but their required skill-set is probably closer to a compiler programmer than the web-dev is.