And China doesn't use sanctions or embargoes on anywhere near the same scale as the US does. Nobody does.
What meaningful sanctions has China imposed? The US has imposed very harsh sanctions against China, Russia, Iran, Syria, Venezuela, Cuba and many other countries. Because of the US dollar's position as the international reserve currency, US sanctions are highly effective. Huawei can barely even do business with other Chinese companies, because they're all afraid of getting hit by secondary sanctions.
The grandparent comment poses this as an issue of confronting a China that is behaving unfairly or erratically. That's not what this is about at all. Chinese policy has been relatively stable. In terms of how it treats foreign firms (for example, on IP protection issues), it's been getting progressively better. China doesn't want to rock the boat, because it is still developing and believes that things will go its way if it just smoothly grows its economy.
The real issue is that the US political class is panicking about being eclipsed as the world's top power. The panic began during the Trump administration, but it has now infected both political parties and is consensus in Washington. We'll see more and more disruptive moves like this until one of two things happens:
1. WW3, which everyone on Earth will lose.
2. The US realizes that being #2 isn't that bad.