Canada is not being "discriminated" by Samsung. There is something like 195 countries, and only 7 countries get the Betas.
Samsung gets the information they need from the 7 countries.
If you were Samsung, and you were releasing Beta software, that may well have bugs (that is the actual purpose of Beta testing), would you want a representative sampling with feedback, or would you want to be inundated with people complaining about something not working properly.. even though they were informed, and they ACCEPTED the conditions of Beta testing..
It's pretty apparent that Samsung's Moderator support is pretty sparse in Canada, so.. if I were making the decision about Betas in Canada, it'd be a solid NO!