An “intersex” person (now usually described by doctors or biologists as a person with a disorder of sexual development, or DSD for short) is either male or female, just like any other human being. So to use the rather silly terminology under dispute, “binary”. The “disorder” is a non-typical development of sexual characteristics of the person’s sex: a disorder of male development in a male, or of female development in a female. We can’t even mention the disorder without implicitly affirming the sex categorization that it affects. The “binary” is part of the definition of homo sapiens.
Every “intersex” person is either male or female. Many in that community object to others describing them as some kind of other sex and, especially, using their medical condition as an ignorant cudgel to advance the “trans” rights agenda.