Unless you actually do a karyotype test on an individual you don’t know what chromosomes they have, and that can’t be inferred with certainty from assigned gender at birth, primary or secondary sexual characteristics, or similar macroscale traits. A non-negligable portion of the population have chromosomes that don’t correspond to XX/XY, and said anomalies do not reliable correlate to a transgender identity.
Unless you actually do a karyotype test on an individual you don’t know what chromosomes they have, and that can’t be inferred with certainty from assigned gender at birth, primary or secondary sexual characteristics, or similar macroscale traits. A non-negligable portion of the population have chromosomes that don’t correspond to XX/XY, and said anomalies do not reliable correlate to a transgender identity.