that is not all of what accounts for 2 citizenship holding, For example if I moved to Canada, as a Yank, and had a child, my child would be born with dule citizenship, even though my child was not forign born as they had Jus Sanguin citizenship from the USA and Jus Soili (yes I know I miss spelled both of them) from Canada... and that would carry on, theoreticaly in perpituity (though realisticly at some point through the generations if they stayed in Canada at some point someone would forget to tell the USA about the new citizen and functionaly the dule citizenship would stop)

I am also aware that you do not have to be first generation to be a settler in a settler colony, I was trying to give the person I was replying to the benifit of the doubt in what they where trying to say, IE: the people who where born their, and do not have another citizenship to move to another country with are innocent civilians, as I mentioned it is hard in a settler colony to define between a "citizen" and a "settler" as a wise friend told me once, settler colonialism really F*cks with how nation states work