The bill in question is Ontario bill 89.
The Ontario Legislature's website has
a page for Bill 89, including explanation of the changes it makes in the existing law.
One piece of the explanation mentions gender identity:
Quote
The paramount purpose of the Act — to promote the best interests, protection and well-being of children — remains unchanged from the current Act.
The additional purposes of the Act are expanded to include the following:
* To recognize that services to children and young persons should be provided in a manner that respects regional differences wherever possible and takes into account,
- physical, emotional, spiritual, mental and developmental needs and differences among children and young persons;
- a child's or young person's race, ancestry, place of origin, colour, ethnic origin, citizenship, family diversity, disability, creed, sex, sexual orientation, gender identity and gender expression; and
- a child's or young person's cultural and linguistic needs.
* To recognize that services to children and young persons and their families should be provided in a manner that builds on the strengths of the families wherever possible.
Thus, the main change (for our purposes) is that the government and any agencies and NGOs contracted with the provincial government must respect the child's gender identity, etc., when deciding what the "best interests of the child" are.
I would guess that this definitely applies once a child gets into the social service system. Whether similar criteria would apply when deciding to involve the social service system in a family isn't clear to me, at least not from this. That is, once a child ends up in "care", they are obligated to respect a trans kid's gender identity and expression (i.e., no conversion therapy, etc.), but it's possible that parents who vigorously deny a child's gender identiy and discipline them for it would still be able to do so, provided it didn't qualify as "abuse" under the old law.
ETA:
It looks like the main point of the changes is to require social service agencies to respect the nationalities of First Nations (Canadian equivalent of "Native American"), etc., children. Canada, like the USA, has had a history of removing First Nation children from their families in order to educate them out of their native-ness. My guess is that, also like the USA, claims of neglect or abuse are still being used to remove children from tribal families and hand them over to more mainstream families, and this change is being made to stop that.
