Wording matters.
Does it make you "less of a game developer"? No, you are still developing games.
If playing with the state machines and data tables are the ONLY thing you are doing the job title is likely different, perhaps "script developer" or a type of "designer", probably not "programmer" or "GPE".
If manipulating the flowcharts represents a PART of what you are doing, it can still be included under various programming umbrellas.
Many times the programmers will write both the front and back ends of these graph tools --- they write the engine side that exposes the values, and then the graphical script side that manipulates the values. The graphical values can be easily edited by other game developers, such as artists, animators, designers, and sometimes even testers. Even if the programmer is the main person who manipulates the graphical tools, if they're working on the code as well they're still programming.
Using graphical tools as a part of the job can still fit under the programmer or gameplay engineer (GPE) umbrella. GPEs will write a lot of code that exposes variables and functions that show up in the tools, or they write the first drafts that other people will adjust as needed. The programmers who develop the tools -- a tool programmer or pipeline programmer -- still needs to use the tools they make. Engine programmers similarly need to use the engines.
Many times programmers are the best person on the team to manipulate the graphical versions of scripts, since they frequently understand what is going on under the hood. There may be several closely related functions but with different performance profiles, there may be slightly better fit to use one method or another.