Most of the casting is Canadian.
True, now, but was starting counting from TOS, and the first 5 series are in LA. Though now that you mention it, Toronto has a very large asian population, around 35%. But we still don't know the breakdown of the acting pool.
No, it should do one of two things: 1) find a way to represent all of these racial groups without centering one over others [you know, the way ST has historically centered whites over other racial groups], or 2) reflect the actual world percentages of these racial rather than the racial group percentages of only one nation.
Are racial hiring quotas even legal in Canada?