Obviously. But the fallacy trades on that insignificant mathematical curiosity to imply something that is ultimately cultural in nature.
Being "Japanese" is a matter of culture, not some kind of "magical Japanese DNA". So it doesn't make sense to say you're "12.5% Japanese". There is no "Japanese DNA". This is different than claiming that you have Japanese ancestry.
Being "Japanese" is a matter of culture, not some kind of "magical Japanese DNA". So it doesn't make sense to say you're "12.5% Japanese". There is no "Japanese DNA". This is different than claiming that you have Japanese ancestry.