Transgendered People and Gay Conversion Therapy

Why is gay conversion therapy illegal in California and New Jersey for minors, while sexual reassignment therapy legal for minors?

In essence, a therapy to resist a predisposition (homosexuality) is illegal. Gay conversion therapy is reversible. Sexual reassignment therapy that is irreversible and affects a child both physically and mentally is legal and protected. This doesn’t make any sense at all! See this California law that protects the rights of “transgendered” as early as kindergarten! I doubt most kindergarten age children even have a good idea what “gender” is!