I agree that no one trusts China to let them take over as the reserve currency. The SDR’s are a more politically palatable approach for most countries. Also the Dollar became the world’s reserve currency when the American economy was incredibly strong compared to others. China’s economy is showing signs of weakness as the US and EU economies are struggling, reducing demand for Chinese imports. Still a strong economy, but not without weaknesses it must overcome. Also the Saudi’s, etc. still want the Petrodollar.