I'm not a genius at all, and didn't realize this story was about "Julia sets" until I finished reading it and came back here for the comments. I was pretty sure that Julia was something like the 4D space bubble found in the Three Body Problem series.
I just enjoyed the prose in the story. Those incoherent words were the interesting bits of worldbuilding that drew me in.
Despite the name, I wouldn't say it is "about" Julia sets, at least not any more than it is about any other kind of fractal