Race-mixing is not occurring on a significant scale in any non-western country.

In Japan, it only took one mixed race person to change the impact of sports entirely. Like I said in the OP, instead of introducing a 1% risk factor, why not just make it 0% instead and simply ban it? Especially as it doesn't cost anything.

Edit: Article in question.

https://www.theguardian.com/sport/2020/aug/25/naomi-osaka-reflects-on-challenges-of-being-black-and-japanese

Which was later followed up with her throwing support towards Blacklivesmatter and trying to "Make People Start Talking".

https://time.com/5888583/naomi-osaka-masks-black-lives-matter-us-open/

There is no need to even pay attention to race-mixing if it is such a marginal phenomenon that it is barely visible. If, however, as in the case of the West, race-mixing is being used by hostile groups as a weapon of mass destruction against a nation/civilization, then opposing it becomes a matter of survival.

This contradicts the fact we've seen actual anti-race mixing laws back when it WAS a marginal phenomenon. The USA had it in the 1600s when the country/colonies were majority white. Germany passed race laws in 1930s, even when the only known Black people were the French soldiers stationed near the borders, or the very few race mixed couples who had returned home from the African colonies.

Now that freedom of movement and much more advanced technology like airplanes has been able to move different cultured populations across the globe in recent years, the agenda wouldn't target just Europeans, but literally any nation who continues to have lax borders.