@b0rnasr1ch @nixCraft And this is their official reason why:
https://discuss.grapheneos.org/d/24134-devices-lacking-standard-privacysecurity-patches-and-protections-arent-private
If a phone isn't supported, it's because it doesn't meet the requirements. The Fairphone is particularly terrible at following basic security practices.

Devices lacking standard privacy/security patches and protections aren't private - GrapheneOS Discussion Forum
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