Robert Eggers masterfully weaves an epic, inspired by the legend of Amleth. If you appreciate the history of Northern Europe, Northern European mythology, or you miss stories of strong heroes and great men you should see this movie. This film explores the positive traits of fatherhood, the honor between a father and son, the destiny of strong men, the mystical and wise nature of great women, and the cold power of the unforgiving lands of the North. It's inspiring, disturbing, exciting, and impactful.
As for the negative reviews here, whether they're explicitly stating it or not they do echo the sentiments of people who seem to hate this movie because of the cultures it represents and the archetypes it explores. I would dismiss their uninformed gripes and vague complaints as misandry and possibly racism.