@ChristabelHolloway I agree with most of your advice but...
Trans people exist, and always have done.
No, not really. Some gender non-conforming people have always existed, and no-one has ever been either 100% gender conforming or 100% gender non-conforming. And it's likely that a tiny number of people who so deeply want to be the other sex they try to live as if they are the other sex are have always existed. But framing all this in terms of "trans" and insisting that some people are "really" the other sex is new.
We mostly accept gay people quite comfortably now, whereas thirty years ago many people would have been horrified by their child coming out as gay. This doesn't have to be so different.
That's part of the narrative that young people (and their parents and teachers) comfort themselves with, that this is like being gay used to be. Well I am older than most mothers here, I was adult 30 years ago, my DH is bisexual, we were young people with our friends coming out as lesbian, gay, bisexual and also transsexual and transvestite. I remember the campaigns, I remember Section 28 and I also remember the early days of AIDS.
I identify with a novella written in the early stages of the AIDS pandemic: a lesbian mother visits her gay son after she watches the Gay Pride march in San Francisco. She's picked up leaflets handed out by a health worker who everyone is ignoring and she tries to warn her son about the physical and psychic dangers of his promiscuous "gay lifestyle" in San Francisco before "safe sex" was a thing, when the symptoms of AIDS were seen but HIV was unknown. Her son shrugs her off saying she is old-fashioned. She walks away from his apartment weeping "my son, my son". A few years later they'd all seen it and lived it and the survivors had grown up to fight back but what loving parent wants their child to pay for wisdom with their life? Or their health, or their fertility.
So far so similar. But what her son doesn't say is that she is homophobic. Now the experiences of the old gay rights movements have been weaponised so that any parent who expresses concern for their child's physical or mental health is framed as a transphobe.
I guess this doesn't really change anything. But don't minimise what this means for parents. It's still about us, and our children, and our children's future too.