Creator of CopperheadOS [0] and now GrapheneOS, Daniel Micay, was a prolific contributor to rustlang-core [1] but did rub off the rustlang community the wrong way? If I'm not mistaken he has a history of contributing to Arch Linux, as well.
What happened with CopperheadOS was unfortunate [2]. I hope Daniel [3] is able to work on GrapheneOS on his own terms [4]. The work that was done had garnered a lot of following and there's hope, given his exploits in the past, that he'd be able to steer this non-profit to heights where industry leaders building SilentCircle [5] and CyanogenMod failed.
Sure will be following the project from afar and routing for its success.
Good luck Daniel.
[0] https://www.reddit.com/r/CopperheadOS/comments/8qdnn3/goodby...
[1] https://news.ycombinator.com/item?id=9551937#9552769
[2] https://news.ycombinator.com/item?id=17289536
[3] https://news.ycombinator.com/user?id=strcat