That sounds incredibly frustrating. I sincerely hope it changes before Google locks down sideloading on certified Android devices entirely. A lot of people run GrapheneOS as a secondary privacy device, not a primary device—I'm one of them. The overwhelming majority of people don't have a GrapheneOS device at all. Not having Amber would seriously affect many people's relationship with Nostr altogether. As you know as well as anyone, you can't rotate a compromised nsec. Thank you for the important work you do.