Adding my reaction to the thread when I saw it:
https://www.quora.com/My-partner…
I can only think that this perspective on who is and isn’t Dutch is tied up with Western European, civic notions of nationhood, rather than stereotypically Eastern European, ethnic notions: the 2nd generation Surinamese born in Rotterdam is more Dutch than the 2nd generation Dutch-Canadian, because he lives there and is acculturated there.