To clarify, you are disagreeing with the statement that racism is organic/naturally occurring correct?
I think the definition of "Racism" is far to vague, and misrepresents the core aspect of what it actually is. I personally do not think people hate those of another race, simply due to appearance. It is far more complicated. I believe it is related to mannerisms, culture, and values. Often times people lump Xenophobia together with racism. Racism itself is just a form of xenophobia extended to the entire group of people. You'd be far fetched to find a racist who hates people just for being a certain race, and not hating them based on certain behaviors instead. So if you take culture into account, more than race. You will see why groups of people dislike each other.
For example, one culture might think speaking up and standing out is embarrassing, and rude. While another might see it as normal. What happens when these two groups are together? General avoidance, annoyance, and pressure to change and convert the other side. Then they will polarize, and demonize the other group. They will see negatives in other behaviors, and one group will teach their kids the other group is loud and obnoxious, while the other group teaches their kids that the quiet people are spineless and cowardly. So in a way, it is both organic, and environmental. But it all starts with tribalism, and human nature; that we really are not aware that we even partake in because its instinctual.
The root of racism is essentially a web of these things, so intertwined throughout human civilization and history. That it isn't going to come undone by telling people to be nice. This is why I have been against things like multiculturalism, because it promotes things like racism, xenophobia, and community distrust. Because even in multicultural societies, the groups segregate themselves. Because they only trust themselves. People disagree on the best approach to something, and that is all that is needed to create racism, xenophobia, and hatred. I also feel it important to not generalize an entire group, based on what prominent figures say. I stick to my rule of judging people as individuals, but even then it is difficult to not feel some sort of impulse to generalize. Alas, it is what it means to be human in my opinion. An endless struggle.
As for China, I especially do not see all Asians as "Chinese". Nor do I think, of all the countries, does this government represent it's people. Because it's a Technocratic communist dictatorship. The people are a victim of their situation, and the government doesn't take any measures against lack of education, poverty, and safety concerns at all. That is why Hong Kong is still protesting, even during the Corona virus outbreak.
I also have to point out, that I think the whole "People are hating on Chinese, due to Corona" is probably a fabricated controversy, and blown out of proportion. Since there will always be a number of hate crimes, regardless of what is going on in the world. The media will make these out to be new (relying on your ignorance), to manufacture outrage. Which could however, inspire more hate crimes. They do this all the time. Remember bathsalts making people into zombies? Remember Metal being Satanic? They did the same shit with that, whenever there is a serious moral concern. Just life before the internet was oh so much more boring lol.