There is no true “transition” to another sex. There is surgically manipulated and drug supported pretense of a “transition”. The “solustions” hide, hinder and delay diagnosing psychological causes for an obsession, a mental health problem, that demands its own takeover of the personality.
You are SO right! As I tell my General Biology students, you are born a female with two X chromosomes or a male with one X and one Y. No matter what you do to your anatomy or what hormones you take to change your outward appearance, you can not change the genes in your cells. There are rare anomalies that occur when the sex chromosomes fail to separate properly (such as XXY or XO), but those are rare and are not due to human manipulation.