The second link you reference, exists solely due to the extreme representation of the housing bubble in Canada versus their GDP:

https://i.imgur.com/55Y0vZQ.png

Are you suggesting you think that kind of housing valuation in relation to the size of the economy, is sustainable? The gap between US housing vs Canadian housing vs economic size, is not subtle, it's extreme. The same kind of housing debt vs economic size representation, is why Sweden's median net wealth level is lower than the US median. Having housing be such an extreme share of the economy, usually has predictable consequences (which the US previously took a hit for).

You'll also need to adjust that 2014 middle class story, for the fact that Canada hit an economic skid shortly thereafter when oil imploded, and the dollar went up a lot (as have most US assets). That occurred almost immediately after that story. The dollar going up a lot by itself is enough to have dramatically altered the wealth balance in question. The Canadian Dollar was around 0.95 to 1 at that time, it's now at 0.78.