Partly true. In the past when risk appetite was up, normally dollar went down because zero funding rate acted as a source of carry trade.
But this time, dollar goes up against all major currency from euro to yen. Gold is also down due to currency movement. One must be wondering if all money are flowing to dollar zone but not to treasury which is seen as safe heaven. Then where is this flood eventually heading to? My bet is that China will soon report another record CPI and force the government to tighten again. We are just waiting the last straw to crash the entire Chinese housing bubble.
Most likely it will be 3-ways movement, up interest rate, up reserve rate, up exchange rate. China will use them in a round robin manner, eventually the aggregate effect will pop the property bubble.