And remember that the economy has been growing the whole time. If the economy grows while the money supply stays constant then it is effectively a shrink of the money supply since a constant amount has to spread across more activity.
The economy has not been growing the whole time. It effectively collapsed during the pandemic, went offline, and restarted at lower capacity afterward. GDP also counts government spending, which is misleading as the government is not producing anything it purchases. As for the 1 trillion drop, if you look at the preceding 5 trillion dollar increase you'll see that 1 trillion is very conservative.
