I don't think "superseded" is the right word, in the same way that ordinary relativity [1] hasn't been superseded by special or general relativity. Fuzzy logic is a more straightforward model that works well enough here, so why throw in the additional complexity and illegibility of neural nets?

[1] Also known as "classical mechanics". Despite widespread belief that relativity is a 20th century idea, the first person to describe relativity wasn't Einstein -- it was Galileo. Einstein himself saw his work on relativity as extending what Galileo had done.