Keeping the bloodline pure

I have long suspected that members of ethnic or religious minorities are in luck when it comes to ending romantic relationships or rejecting potential partners, because they can always play the 'it's not you, it's your background' card. It's far more plausible than announcing a sudden change in sexual orientation, or than 'I'm not ready for a relationship right now', while accomplishing the same two things: convincing the rejected party that a) it's nothing personal, and b) it's never gonna happen. And an extra added buffer: the dumpee/rejectee is put in a position of feeling culturally insensitive for even suggesting they work things out. (The oops comes later, when the minority's engagement to a different out-group partner is announced.) Prudie's commenters, but not Prudie herself, see it for what it is.