The article you posted said that people can self identify their own race. That is not a change, that is exactly how it has always been. At some point, you have self identified as a certain race. Nobody ever asked you what it was based on, nor did you have to prove anything to anybody.
It seems that your real concern is that people are suddenly going to become trans racial. Have you seen an increase in transracial people in your own life or on television? Can you name even a few? Did this article spook you in some way?
The idea of being trans racial is ridiculous to me. But I'm not going to raise a fuss over something that's not even happening. You seem to be predicting a drastic change in people being trans racial, I don't see that happening.