He wants to be out of the loop when the blame for all of this is laid. Years ago administrations and Congress used to have debate over "guns or butter"... money for defense or social programs... how much of the budget was to go to each. Then Reagan came along with notion, "we can have both... spend the money we have and borrow whatever else we want..." (There was even one Congressman who loudly proclaimed, "Reagan proved deficits don't matter". What a dope!) Of course "borrowing" when you have no ability or intention of ever repaying is really just "print-money". Greenspan played a big role in facilitating the mess we're in today.
https://mises.org/wire/why-fed-so-afraid-judy-shelton Different subject, but touches up on FOMC voting history and Greenspan's treatment of 'dissenters'.