I would like to think of this as a mis-communication. They talk about the CMVSS/FMVSS decals, but those didn't really come into play until the 70s I believe. I would get a hold of the originator of these bulletins, Geoff Ford. His email and phone number are on the net See:
https://dir.gov.bc.ca/gtds.cgi?esear...bjectId=128573
If that doesn't work out (and it can be tough working with bureaucrats, although there are some good ones out there) then talk to your member of the legislature.