I don't know what's going on, but
nice-package uses normalize-package-data as a starter, then does even more package cleanup:
Is straight up not true. normalize-package-data isn't used anywhere. It's not a dependency of normalize-registry-metadata either.
(and I'm a little miffed atm because nice-package threw the author field into other, when normalize-package-data says it neatly parses the author field into an object with name, email, and url, and I had assumed based on the readme that nice-package was a superset of normalize-package-data)