Shouldn't this bring to a close Canada's efforts to ensure every group gets its legal rights?
Shouldn't the focus now be on violations to the various protected groups?

I assume the transgenders are the last to get their rights because they are so few in numbers. And just because these people are now guaranteed their rights doesn't mean they will exercise them. I would imagine there a lots of transgenders who would rather not advertise the fact, thus making the number of people this actually affects infinitesimal.  
When you finally get around to granting legal rights to a group with an infinitesimal number of members compared to the whole population,  it's reasonable to assume there is no group left in Canada that is not a protected class.