Every account of a trans child, that I've seen, shows adults who can't accept that a child doesn't fit the stereotypes currently associated with their sex.
Agreed.
A child has to learn what is supposedly acceptable behaviour for his or her sex (it is not innate), and they learn that from adults (and to some extent from other children, who have also learnt from adults). Left to their own devices, children just play with whoever is there, and with whichever toys are available.
When adults with a vested interest in pushing trans 'rights' can't explain what it is to be a man or a woman, or what it means to 'live as' a man or a woman, or how anyone 'knows' that they are a man or a woman, how can a child know any of those things?
I realise that the chances of anyone attempting to explain that are slim to none. If the 'allies' would even attempt to explain things like that, there would be a basis for a conversation; but as it is they always refuse - either by diverting the conversation to something like Nazis or racism, by leaving the conversation for spurious reasons, such as 'you are not saying anything new', or 'be kind', attempting to take the moral high ground by asserting their 'credentials' as feminists or claiming to supporters of 'the most marginalised group in society', as defined by Stonewall, despite the fact that the police, the NHS and the education system (amongst others) are making it impossible for any employees to express anything but blind support for the right of transpeople to trample over the hard-earned rights of women. It's so frustrating.