Are you in Queensland or is that what you have read.
My 17 year old daughter is at a Protect Trans Rights rally today as gender affirming care has been paused in Queensland. She is straight but her best friend is a trans man (AFAB).
https://www1.racgp.org.au/newsgp/clinical/pause-on-puberty-blockers-leaves-patients-languish
As a parent who has run the gamut of schools here, I can say that your statement is absolutely not the truth in reality. Schools don't recognise name changes - they will use the birth name on all documents.
My children did not go to coed schools and no provision for gender neutral bathrooms was made. I can't comment on the bathroom status at coed schools.
Interested in your sources as they are at odds with what is happening on the ground.
FWIW - we have just moved away from Qld largely due to it's conservative, hard right wing leaning. Racism, sexism, misogyny, trans right denial, climate scepticism, Indigenous Rights denial are all RIFE so I am struggling to align your view of Qld for what it is - a big old country town run by old white dudes.