Where did you get the idea that the Church thinks that we should turn them away? The church did not turn prostitutes and murderers away, so why would they do that for someone who cannot help it?
The phrase “inherently disordered” does not mean that they are gross or are naturally sinners. Back in the day, Jewish people would think a blind man was blind because he was born a sinner or some messed up reason like that. Of course, we know that they are misguided. The phrase simply means that it’s not “natural” or “not of God”. (edit: this is putting it in a very simple way)
This means that gender dysphoria is not caused by God, in fact, one would say that it is the result of the fallen nature of human beings. As with mental disorders or genetic mutations. People usually say “God makes no mistakes” when it comes to these issues, including homosexuality and gender dysphoria. But it is a “mistake” and it is “something wrong”. God didn’t make these things though.
So while homosexuality and gender dysphoria are disordered ie not something that God made and intends for us to have, it does not mean that we should harass them and hurt them . The catechism even states that.
We have some posters here that do that, which is unfortunate. But that doesn’t mean that we can do it. In fact, a male who is attracted to males won’t go to hell because of his ATTRACTION but a homophobe would probably go to hell because of his homophobia.