The problem that the US is making is that they've increasingly weaponised their financial system and economy. While short-term this allows them to wield enormous power it incentives those angered by it to pursue alternative measures.
Just like the semiconductor debacle. Short-term it looks good for the US to stick it to Huawei, but they'll survive, and the Chinese will push like made to create their own alternatives; and that's exactly what they are doing. The more dangerous side of this for the US is that it will also strip US products out of Chinese supply chains. So it's a double hit. Already companies are marketing their products as EAR (Export Administration Regulation) free to China. Given that China is one of the largest growing market, and responsible for a decent percentage of many semiconductor company sales, this will just hurt US companies, and advantage their rivals. The result is that US companies lose billions in sales, and then get hit when Chinese semiconductor companies reach parity in a few years time (probably quicker than expected).
Now this is just the thin end of the wedge. Similar stuff is probably happening in banking, insurance and other areas where reliance is placed on the US. I imagine the Chinese are looking at any area where there are 'US points of failure'.
If US dollar dominance comes to an end then the US loses a lot of flexibility. They won't just be able to print money without suffering the consequences.