Hawthorne had his own hatreds - we needn't share them.
Puritans were obsessed with death, with the final moment when whether they belonged to the elect or not would be revealed. They were both horrified and fascinated by death. They were obsessed with time, with "improving the time" and not wasting it. They were not Docetists, falling into the oft-recurring heresy that material things were evil and spiritual ones were pure. Many Christian groups have leaned this way over the centuries, and the Puritans had some of that, but they did not foreswear the flesh, they merely believed it should be held under short rein. They drank beer and enjoyed it. They had folk dances, but not dances with pairs of men and women. They had sports and recreations, though they believed these should be limited.
(Screwtape:) In modern Christian writings, though I see much (indeed more than I like) about Mammon, I see few of the old warnings about Worldly Vanities, the Choice of Friends, and the Value of Time. All that, your patient would probably classify as ‘Puritanism’—and may I remark in passing that the value we have given to that word is one of the really solid triumphs of the last hundred years? By it we rescue annually thousands of humans from temperance, chastity, and sobriety of life. CS Lewis, The Screwtape Letters (#10)Stop blaming the Puritans.