The guy who wrote this, a former Republican congressman from Oklahoma, lacks the ability to use basic reasoning and logic. It is a supreme example of the slippery slope fallacy. Giving transgender people rights does not mean that we are going to start letting people who think that they are Warren Buffet withdraw money from his account or other stupid stuff like that, but that is the argument that he is seriously making.
As for 'reality', we have science to investigate reality, and what we have found, among other things, is that the neuro-anatomy of MtFs is comparable to that of women instead of men. Transgender people are not denying reality or 'choosing' to be trans. They are as a result of biology. That is reality.
This is really just irrational bigotry and fear-mongering. Try not to get too worked up over it anyone. This kind of politician is a dying breed.