its a massive investment and if you look at it this way you have to ask, is ukraine such a sure bet and what are the consequences of that investment going south. and the failure to ask these questions is indicative that too many people see the usd as being in unlimited supply, which by itself devalues the usd
Nothing is a sure bet but leaving Russian aggression unchecked destabilizes the region. The world counts on the US to maintain the peace and status quo. As long as there's still confidence in that, the US currency will continue being the world's reserve currency along with all the benefits that come with that.