Yoti, the "age verification" company, has supposedly been reporting GrapheneOS users to law enforcement as suspicious. https://cybernews.com/privacy/grapheneos-users-flagged-yoti-age-verification/

GrapheneOS claims this isn't true. https://discuss.grapheneos.org/d/36134-grapheneos-user-reported-to-authorities-for-using-grapheneos/14

Key takeaway from this: Don't age verify. Ever. For any reason. The kind of information you should never share on the Internet isn't magically OK to share on the Internet just because a law says companies have to ask for it.