It must be amusing the first couple of times you run across this as a car dealership or bank or whatever, but yes it most get old quickly. My friend dealt with them in the course of her job for a while, but it was infrequent so it was just enough to be funny, since the sovcit movement isn't as popular in Canada yet.

I've been reading Canadian court transcripts this weekend (mostly to see judicial decisions on parents who clash over vaccinating their children which is interesting), and several of them use sovcit tactics. For example this one: https://www.canlii.org/en/nb/nbkb/doc/2023/2023nbkb97/2023nbkb97.html?resultId=c90ba206ff01487c88f4582dcafe8d21&searchId=2024-10-13T08:00:40:536/09c1ccfc0de84f3abba161a483a1b37a&searchUrlHash=AAAAAQAfVmFjY2luZSBjaGlsZHJlbiBuZXcgQnJ1bnN3aWNrIAAAAAAB

The father's written replies are classic sovcit language, referring to their child as their biological property.