You're welcome to think it's a bad idea, but it's not an unreality. Students need to know they're going to see it. Getting them to use the chosen name can be lifesaving.
Using Chosen Names Reduces Odds of Depression and Suicide in Transgender Youths - UT News. Many schools are going to care more about that than conservative ideology.
Six-year olds don't need to understand the details of gender. They just need to know that they may see other kids who want to be called "she" rather than "he" or visa versa. This isn't beyond a 6 year old.
That rather short article seem like an example of the irresponsible use of self-harm statistics.
To be balanced and I don't think its good to use the stats for self-harm of those in transition or post transition in isolation either, but to be balanced any responsible article would quote both in this regard. But what do they tell us, they can't always tell us why someone committed suicide.
There has been solid research done on persistence and desistence.
steensma2013.pdf
But the transgender activists and lobby groups won't accept it unless it supports their brand of identity politics.
How do we recognise an ideology? By the fact that those in the grip of it refer to biology as "someone's personal views", and feel a need to try and discredit other research instead of just letting science self-correct (where it is amiss) as study continues.
Its known on solid research that desistance is a high percentage and that going through puberty can help, that is if they haven't been fast-tracked down another path, hence the best practice as recognised by professionals who understand gender dysphoria has been "watchful waiting", and not rushing a young person along a course that goes from name change to externally administered hormones, and perhaps on to surgery, but which never actually results and cannot result in a change of sex.
The activists are responsible for much of the harm being done. Their ideology is actually part of the cause of the disconnect between gender and sex. Lets get one thing straight here a child going through a period of gender dysphoria (previously GID Gender Identity Disorder) which can vary in intensity
is not "Trans." Neither are they certain they want to change sex or gender (most men for instance do not go on to have surgery) - so pushing them to a decision at an early age is simply wrong, especially when there can be underlying issues, that could be successfully addressed.