There are two big dynamics at play here.

The first and most important is indoctrination. Out-group bias is dysgenic. It is not an organic evolved behavior. It must be learned, and the source of the indoctrination is necessarily from outside the indoctrinated group.

In the case of anti-white hatred, there can be little debate that the origin is cultural Marxism aka Critical Theory, which was created and disseminated by Bolshevik atheistic Jews in academia, media, and entertainment.

The mind virus has long since metastasized into the general white population, so there’s little point in attempting to hold any outside group accountable. A third or more of western whites are simply lost.

The second dynamic is the interplay between anti-whiteness and LGBT. White children are being taught to hate themselves because they are members of an oppressor class. They are also being taught that society reveres those who belong to the oppressed classes - that you will receive support, opportunities, and resources if you are a victim. There is only one way for white children to shed their oppressor label and join the righteous ranks of the oppressed: become LGBT. It is the only protected group you can choose to join. That’s why white children are swarming to LGBT identities. It is the new path of least resistance.

It also just so happens to be a path that massively suppresses reproduction. So if you want to become a good white, you need to adopt a lifestyle that will greatly decrease the likelihood that you will propagate your race/ethnicity.