The US printing money doesn't allow it to export its inflation, but rather exporting inflation allows the US to print far more money than other countries without comparable inflation. In fact we even relatively economically weaken other countries in the process of it.
This is why countries with comparable debt to GDP ratios are generally in very poor economic shape while the US is near its economic peak in most typical measurements.
But this superpower is fading in ways you presumably now understand, but the decades of money printer go whrrrr, and the unbelievable debt hole it left, remains.
Trying to handle a debt whose interest alone has now exceeded a trillion dollars a year is not going to be realistically possible without funny money or the emergence of some new economy booming industry akin to the birth of computing/internet.