I agree with almost everything you have just said. I think it reinforces Leslie Seidle's point about the importance of public education, which he made in response to the earlier question. On an issue like this, you can't really expect people to know a lot about different electoral systems. First of all, most voters think about elections only at election time. They aren't people like me who are talking about them and writing about them all the time, or people like you who are living the life of politics. They're interested in elections. They think about some of these questions, but only on election day, not over the whole electoral cycle.
Also, one of the things I've learned, looking at some of the other referendums on these topics that have taken place in other countries particularly, is that voters are not comparativists. I am a comparative political scientist. In addition to studying Canada, I study Europe. Most of the structures we use for students are comparative, to understand the similarities and differences between different countries, different political environments, different political processes, and so on.
Voters don't think that way. They're not sitting around thinking about first past the post versus list PR or STV. If you want to engage them, you have to give them the materials to work with. I think that's the point you have made, which I completely agree with.