this trend is general enough that I will use the pronoun you

This trend is not only general, but also irrelevant since it's not the other peoples' responsibility, let alone an ability to define for you who you are. If you don't know whether who you are, that's on you alone and no one else.

And what sentiment am I catering to?

The racist sentiment. Read what you said once again: " i feel so negatively towards both race mixing and immigration." This phrase could as well come from Stormfront.com. You with your self-chastizing denigration while acting cluelessly at the same time is precisely the goal of racism, nothing else. Turning people into unaware of self degenerates.

Every perspective of a mixed person is just as valid

Indeed, only there are perspectives that are productive, and then there are the destructive ones. Guess with a single try which category your perspective falls under.