Two, we don't have socialism in this country.
Three, the size of the state has been rolled back in many countries, many times. Including the US after wars. There is absolutely nothing undoable about a particle of it.
The left peddles the myth that everything they do is an irrevesible ratchet, but it is pure poppycock. Men are free and they can do whatever the heck they want.
I have no faith in doom mongering pessimism of the sort you are peddling. I have plenty in the American people. The former has never done anything for anyone, ever. The latter have freed two thirds of humanity and created the greatest prosperity in human history.
You yourself state that the big problem is middle class entitlements. Just to be clear, you believe that this same middle class is willing to vote itself a significant cut in entitlements?