Agreed, the documents should not be editable in the first place, there's multiple read-only formats that could be used, but the point here is that the software used is not tied to an American company ... emphasizing that China needs the US much less than the US needs China. China is a separate country and culture, not just a serf of the US.
China has supercomputers that match or exceed those of the US.
China has a space station that's growing, NASA is taking the International Space Station down.
China owns assets in the US, US owns some assets in China, but China has the scientists, the technology, the population (cheaper labour), the assets and resources to get along just fine without the US. The US has more costly labour, and needs to import critical resources from China.
China is showing that its software is just as viable, maybe even more suitable in China, than the US products.
As Marshall McLuhan said, 'The medium is the message.' (https://en.wikipedia.org/wiki/The_medium_is_the_message)
I would think that trying to get along globally via diplomacy and trade would be the best option, but hey, I'm not a politician and have never run a country. Just my 2 worth