That is not really true, or at least it's very difficult and you lose accuracy. The problem is that the definition of "Open Source AI" is bollocks since it doesn't require release of the training set. In other words, models like Qwen are already tuned to the point that removing the bias would degrade performance a lot.

Mind you, this has nothing to do with the model being Chinese, all open source models are like this, with very few niche exceptions. But we also have to stop being politically correct and saying that a model trained to rewrite history is OK.