It is — "neurodivergent" just means having a mind that functions in ways which diverge significantly from the dominant societal standards of “normal.” It can be largely or entirely genetic and innate, or it can be largely or entirely produced by brain-altering experience, or some combination of the two, e.g. autism, brain injury, or heavy psychadelic use. (paraphrased from Dr. Nick Walker's Neurodiversity: some basic terms & definitions)