I don't doubt it was leaked. But even with that information, unprecedented Fed support was speculated for some time but crystalized on March 3rd when Fed lowered rates 0.5%. the market still went down since then. Maybe it didn't go down as much as it would have had the Fed not intervened, but that's difficult to profit from. Market recovered a bit and you can point to another Fed policy in hindsight and say this caused the rebound.