Reaganomics deliberately set out to dismantle the New Deal
Not really. Heres the basics of Reganomics.
(1) reduce the growth of government spending, (2) reduce the marginal tax rates on income from both labor and capital, (3) reduce regulation (4) reduce inflation by controlling the growth of the money supply.
The goal of these objectives was to increase savings, investment, and economic growth. Balancing the budget, restoring healthy financial markets, and reducing inflation and interest rates were also key.
Rather decent goals. Unfortunately we had the banking lobby step in and write laws that ruined the countries ability to increase savings as well as take advantage of laws/deregulation in order to try to destroy one of its main competitors, the GSE's.
We had several politicians step in who not only refused to enforce the laws on the books but also hindered the states from trying to enact laws to do such. Deregulation in itself did not create the meltdown. It simply lit the match. It was governments inaction to respond to abuses which came out of deregulation that poured gasoline on the fire.
We have also had several politians step in who are/were more concerned with buying votes and control for their party which has led to the inability to balance the budget.