Puritanism is/was the opposite of a good thing. Cromwell was a tyrant. And the Pilgrims were not Puritans.
He was in his treatment of the Irish and Roman Catholics. He was not in doing some of the things which needed to be done like executing the tyrant King Charles I.
And the Pilgrims were not Puritans.
Yes they were albeit not in the same sense as later Puritans who behaved like tyrants when they gained power.
Few are the examples of history of people who did not turn into tyrants when they gained power.
George Washington is perhaps the best example. So were the first five presidents who followed him. That is why our constitution was designed with checks and balances to limit the acquisition of power. It is still a new and revolutionary concept far superior to the alternatives proposed by the libtards who would, at best, take us back to the days of feudalism and, at worst, into absolute tyranny.