There are many different kinds of jobs that are all called “programmer.”
For example, someone who builds forms using visual basic is often also called a “programmer” and that’s very similar to using Blueprint.
https://www.quora.com/Why-are-visual-basic-programmers-laughed-at-by-other-programmers/answer/Jon-Watte
Personally, if all you do is blueprinting, then I’d call it a “scripter.” That’s a thing, in game development.