There was NO success of Progressivism that couldn't have been accomplished otherwise.
The modern Administrative State is the horrible child of the Progressive Movement and shows it to have been one of American History's biggest mistakes.
Woodrow Wilson was just blind and pompous in saying:
The trouble with the theory [of limited and divided government] is that government is not a machine, but a living thing. This is where the living and breathing constitution comes from. It is modified by its environment, necessitated by its tasks, and shaped to its functions by the sheer pressure of life.
Woodrow Wilson
And Calvin Coolidge showed how unthinking Wilson was [ notice the intentional use of the word 'progress"
If all men are created equal, that is final. If they are endowed with inalienable rights, that is final. If governments derive their just powers from the consent of the governed, that is final. No advance, no progress can be made beyond these propositions. If anyone wishes to deny their truth or their soundness, the only direction in which he can proceed historically is not forward, but backward toward the time when there was no equality, no rights of the individual, no rule of the people. Those who wish to proceed in that direction can not lay claim to progress.