It appears that way, but skirts around the gametic model of discerning biological sex that is the golden standard for other species, while elevating the status of chromosomal defects.

It’s a good example how selective presentation of scientific realities can be abused to mislead.

Chromosomal defects in a binary system don’t constitute a new or between-state, and it also isn’t commonly described that way: XXY (Kleinfeltner) affecting males is the mainstream position.