For a couple of reasons, same-sex marriage just isn't the wedge issue it used to be.
First of all, in Canada the prevailing attitude -- even among large numbers people who only a few years ago would have been steeped in homophobia -- seems more and more to be, "Aw, who cares?"
This is by no means meant as a suggestion homophobia no longer exists, or that it's not a serious social problem, only that little by little in Canada today more people are becoming more tolerant in this regard, and as a result same-sex marriage is fading into a non-issue. Every day, more Canadians think, what the heck, live and let live.