Transgenderism is an expression of liberalism, which is left wing. It represents a liberation from the shackles of all convention, now reaching sex/gender. The liberals believe that there is a difference between soul and body and your true self, as represented by your soul, should be free to pursue whatever endeavors in life it wishes. As such, we should not be confined by things like your sex, religion, nationality, family, race, etc.. All of your immutable characteristics are portrayed as obstacles in your soul achieving its true self.
This is obviously deeply incorrect. We are not just souls floating in the ether, we are also our bodies. We are both soul and body, inseparably intertwined. As such, our body, our immutable characteristics are important elements of our true selves. Our bodies should be respected and worshipped in a similar way that we think of our soul.
If you do not believe me, take a look at how the lives of these people who believe strongly in this liberal ideal (of emancipation from the body) destroy themselves, first through a disregard and destruction of their bodily health, which also destroys their mental health.
We see transgenderism and a general identity crisis because we have placed too much belief in liberalism. A path out of this would require us to embrace immutable characteristics and reject a soul/body dichotomy.