To be fair, this looks extremely similar to the comfy node editor. Would be a little more like asking if the Ford Fusion and the Lincoln MKZ are related because they look a hell of a lot alike from the outside.
It doesn't look very similar to me. No more similar than Unreal Engine blueprints. ComfyUI has a better design I think but again, it's borrowing from other projects in that respect (and i don't think they would deny that)