It does not imply "wealth inequality is the result of federal policies". It implies that the current transfer of wealth is a result of federal policy.
> Who owns the Federal Reserve?
> The Federal Reserve System is not "owned" by anyone. The Federal Reserve was created in 1913 by the Federal Reserve Act to serve as the nation's central bank. The Board of Governors in Washington, D.C., is an agency of the federal government and reports to and is directly accountable to the Congress.
(emphasis added)
https://en.wikipedia.org/wiki/Capital_in_the_Twenty-First_Ce...
They also implicitly affect asset prices which is probably one of the primary causes of wealth inequality.