Yes, in fact on GrapheneOS it's less necessary and it's only necessary if you don't want to rely on the secure element rate limiting.

GrapheneOS allows using a passphrase with more convenience because of the fingerprint plus second factor pin (I don't think you can just have a pin as a secondary unlock). You don't need to enter the passphrase every time you unlock with this setup, only when first starting up.

The official opinion: https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...