As for financial deregulation, it began two presidents after Reagan with the Clinton administration's repeal of Glass-Steagall.
By curing stagflation, Reagan gave the economy a new lease on life. By ending the cold war, Reagan made it possible to curtail Pentagon spending and to balance the budget. It is not Reagan's fault that Washington responded to the Soviet collapse with a new militarism in pursuit of world hegemony. That goal appeared with the neoconservatives' "Project for the New American Century" a decade after Reagan left office.
Yet, the left-wing remains obsessed with Ronald Reagan, wasting its energy in uninformed tirades against an administration that many leftists are too young to have experienced and know nothing about.