Ultimately girls will just date who they like, ethnicity doesn't usually come into it when you're young.
Correct. As birth rates drop and broken homes increase - heritage is increasingly less important to Westerners. If you are unsure about children (which many of my Western friends were growing up) then why would ethnicity be all that important?
My personal issue is how people in interracial relationships will then feel forced to support if not even speak out for "progressive ideals". But as I told my family member: you made this decision and need to live with it, don't expect your family or community to integrate to your rare (which interracial still is) personal decision.
This is also why Poles must keep a strict standard for whom is considered Polish and whom is not. Once you start integrating to accommodate peoples radical actions - you lose self worth. Poles must always understand that if you go out of race you won't be greeted with open arms