[NotPractical]

Wasn't most of the hype surrounding the Motorola partnership based on the idea that you'd be able to get a device with GrapheneOS pre-installed, boosting the legitimacy of GrapheneOS as a competitor to Google Android? Sure, "GrapheneOS adds several more supported devices" is cool and all, but it's not nearly as exciting...

[HybridStatAnim8]

No. The bare minimum is that Motorola provides the needed baseline hardware security requirements to their future devices. Everything else is just a bonus. There could be green-boot support and/or preinstalled devices, but thats not a necessity. GOS benefits with an official hardware platform, potentially early partner access to AOSP source code, input on hardware and firmware decisions, and Motorola benefits by potentially having GOS features, better hardware security, and making tons of money from alternate OS users, GOS or otherwise.