I think that persons should marry whomever they want. I do not have an explanation for why JCs seem to have the highest intermarriage rate. It is interesting that it started almost immediately after internment and never slowed down. My opinion is that the dispersal of JCs to many non-Japanese communities across Canada is a strong motivating factor.
When I was growing up, we all dated and married other Japanese. There were a few exceptions but on the whole when I look back at my friends from that time, they are all married to Japanese.
My son is married to a girl whose background is Hungarian. My middle daughter’s not married. My youngest is married to a Chinese from Taiwan. So there’s been a shift. I’m fine with it. I don’t know that it’s really an issue at all.