Do you have any links to support the assertion that China debt is worse than US?
China is also a large external creditor, for example holding a large amount of treasury bonds from other countries.
I certainly don't know how either of those impact the calculus of which is worse and/or more manageable though.
If there is a secret Trump plan to devalue the dollar and force us treasury holders to accept cheaper longer term debt, the biggest plenary will be to social security.
One visualization:
https://www.visualcapitalist.com/charted-heres-who-owns-u-s-...
(Though on the last numbers I saw had the UK and China with far more similar amounts of holdings.$
Calling T-bills debt is only half the picture. They function more like dollars, whose value can be deflated or increased after issuance merely by changing interest rates.