That's true, but it doesn't make it better in any way. Ideally reserve currency should not be the currency of any single country to avoid this situation where one country basically freeloads on the global economic development by printing paper and can even cause wave of global inflation by arbitrarily deciding to print waaay to much, too quickly.

You might argue that to keep printing this country needs to invest into aircraft carriers to keep everybody else in line and well behaved. But it's still a very profitable arrangement as the recent history of USA shows.