That is the big question these days...
Some say no...see link
But many people aren't so sure... Those who make the bullish argument on the dollar have macroeconomics going against them....but they rely on "tradition" and lack of good alternatives for their optimism... But that is a thin reed to lean on...and it smacks of the UK Pound in the early 1930's...which by the way was the last time the world went through a major shift in the monetary polarity of the global economy... When the Pound went off gold in 1931...!
The current dollar crisis is simply 1971 by other means...the nexus to gold is now obsolete...but gold still rules the currency markets in times of uncertainty or monetary inflation by central banks as is happening now...
