Am I weird in not being too surprised? It don't have experience with wire EDM but every toolpath generator or slicer I've ever used was just local software.
No, running locally is pretty standard.
Also what's weird is that this project seems to be primarily written in javascript. I can't imagine that's a pleasant user experience for generating tool paths...
Bambu Labs ~recently had some drama around requiring an account / harvesting data for their machines. Might be what that's about.