I completely agree that democracy only works when most people are well informed. That's the crux of so many of our problems in society and politics. Perhaps the biggest weakness of democracy and one of societies most fundamental problems.
My personal preference is for proportional representation but it won't overcome a misinformed public or pervasive corruption.
I agree that there is an objective truth to many matters, sometimes at odds with popular opinion, but even if proportional representation is truly and significantly superior to the status quo, if it is introduced against the opinion of the majority, is that democracy?
So, as you say, it is necessary to keep bringing it up. Keep explaining. There are some good examples from outside Canada. To get some local hands-on experience, it might be easier to start with more local government.
Democracy must be rooted in a well informed public, so every truly democratic political movement and change must begin there. It's not easy and there are no shortcuts.