The threat model shift here is what's interesting. When privacy lives downstream of the OEM — a hobbyist reflashing a Pixel after it's already been through the standard supply chain — you're defending against everything that came before you. Official partnership means GrapheneOS can influence hardware decisions before manufacturing. That's a different conversation entirely. Whether Motorola executes on it is another question. But the principle of hardening at the source rather than remediation after the fact is how you actually close attack surface.