> This is just pure speculation.
It is the pigeonhole principle. The M2 has gone up by ~25% [0] and population has gone up by about 0.6%. At a given moment someone must control around 25% more dollars, and probably more assuming a quite dis-equal distribution of the new money. Unless the US is bailing out foreigners, I suppose. Doesn't seem like a winning strategy if they want to drive up monetary velocity though.
Probably shareholders are the winners here, if I were going to speculate. It is a bit silly and it doesn't help anyone.