1) the whole point would be to prosecute it, not "discuss it". It's allowed to be discussed to the extent that nothing comes out of it, hence the classification of the details.

2) Remember that the narrative of the current US president is that the US is the underdog attacked from everywhere, and so some categories of enemies should be designated and dealt with at large scale and brutally, some of those ennemies will be internal sub-categories of people, and that the economy of war should be reinforced.

I am not really defending China (just a bit, because I feel the racist undertone on those attacks), but I think having the last super-power behave like a good neighbor and a role model would have a more positive impact on the world than designating a few ennemies, waging war, destroying internal democracy to concentrate the power, and acting generally like a bully.