Why do you think that is? Is nobody really questioning it? What are the specific cultural factors that have enabled it to such a degree?
You have no idea how much time I've spent asking myself that question. I haven't really come up with a good answer, just some thoughts.
It seems difficult to connect to others who think similarly, there is nothing like mumsnet. I suspect that there are more Canadians with concerns on MN than on any Canadian focused forum. I find it difficult, and I am looking, to find information about specific Canadian political and policy issues, too. There is a little going on in BC, but that is farther away from me than the UK!
Institutions here have been very captured, quite quietly in general. I understand that locally to me there was something of a purge of GC women from local left political parties - I heard this on MN though, I haven't been able to find anything out beyond that. The only real pushback was Jordan Peterson and Meghan Murphy over C-16, but it happened so fast that it didn't raise too many worries.
There is probably a significant character element. I remember when same sex marriage was being debated both here and in the US. My friend who had been living in the US for a while commented that it had a very different character there where the pro-side was very ideological. On the Canadian side, it was much more about being kind and nice to all, accepting. Often ideology simply isn't examined in much detail, it's very live and let live.
I would actually go so far as to say it's intellectually irresponsible, and I think that for some time this is the kind of thinking that has been taught in schools. Students get very little content in terms of logic, philosophy, history, other than what is directed to an identity politics agenda.
The national broadcaster, the CBC, has been completely captured, as badly or worse than the BBC. There isn't much of a different viewpoint available at a national level. Politically, three of four major parties are completely captured, not only on this issue but the whole of ID politics. The Conservative OTOH have been taken over by incompetent yahoos who make BJ look like a political genius.
And also from a politics POV, there has been less and less acceptance of different views within political parties. The PM has made a lot of political hay by presenting anyone who disagrees with his vision of Canada as being against Canadian Values. Questions and issues which used to be considered to be beyond party politics are now whipped issues. Even the Greens, who specifically prohibit whipping have now made it clear that they make sure candidates toe the line in other ways, without even blushing.
TBH I have very little hope of change.