Just a few things id like to point out.
Before the federal election, bill C-389 (iirc) passed the HoC, but didnt go through the senate. The bill is about adding gender identity to the listed of protected subclass and the hate crime laws. So no, there is no explicit protection for transpeople in Canada as a whole, unless the place you happen to be in have one.
The federal government doesnt pay for anything in healthcare, it just split the money to the provincial government. Quebec (wheres Dr. B is) and British Colombia are two province that I know cover SRS in their public healthcare (ie free to us) and part of the medication. Alberta and Ontario had it for a while I think. Anywhere else, its out-of-pocket for most of it.
Most of the transwomen at the clinic probably were from Quebec, hence their SRS was fully covered. Most of Dr. B's patient are from the US or Quebec, rarely from other parts of Canada iirc.