One point - There are individuals who are genetically born the wrong gender. Gender reassignment based on genetic evidence that the individual is expressing the wrong gender characteristics is something that should be perfectly acceptable. There are also cases of individuals who genetically express traits of both genders. Once again, gender reassignment should be a perfectly acceptable option.
That being said, there is as much need for celebrating gender reassignment as there would be the prescription of an inhaler for asthma...NONE. Gender reassignment is a medical procedure, nothing more. It is not something that needs to be glorified or even encouraged as the situations in which it is truly necessary are very rare.