I care about it from the standpoint of seeing it as part of the globalist plan, it seems like they don't want people to have different cultures but they want everyone to be these mixed mutts with no past, no ancestry, no culture, no nation, no borders. Just mixed mutts with no claim to any land, thus these people don't want to defend their rights. Their culture will be popular culture, their thought process will be what the Jewish overlords dictate them to believe, their slogans come from TV commercials etc.
Its also objectively bad from the viewpoint that mixing higher IQ races with lower IQ races dumbs down the populations that can actually contribute meaningfully for the world in terms of science, technology... What good is it for the world if 80 IQ spear chuckers are breeding like rabbits while the more intelligent races like East Asians ie. Japanese, Koreans, Chinese and whites are in a demographic decline. And on top of that you want these populations to racemix with others? Yikes.
I don't think its a moral wrongdoing to racemix necessarily (except the kids usually end up hating being mixed, so there's that) but since you know that its the chosen tribe that is promoting racemixing for everyone else, you know that it doesn't fare well for the people who mix.