I'm pretty sure telling any kid under 16 years old that he's right/correct about something that significant to the rest of his life (or she/xe/it's) will result in nothing positive.
We know how dumb teenagers are. Do we think children are any better? Especially ones who haven't even grown armpit hair.
I'm 100% sure that this legislation is more of the Canadian way of "don't offend anyone or make anybody sad, ever, even if it's a little kid who wants to dictate his own life at the age of 7".
The earlier hormone therapy is implemented the mote likely the subject will pass as male/female. It's incredibly hard to make someone transitioning look like their selected gender once puberty sets in, not to mention the trauma a teen is in once they are hit with body dismorphia fell force.
People support giving hormone therapy to children? What the fuck.