We are just going to have to wait and see how the actual GrapheneOS project handles the near future. I think it will be a big blow to trust if they end up replacing Daniel Micay with some pseudonymous developer. I know they now claim that Micay was barely involved with development—a claim I’ve never really heard from anyone before Micay leaving made it convenient—of GrapheneOS, but honestly from an outside perspective it’s hard to believe that’s actually the case. Micay was a prolific contributor to GrapheneOS on GitHub. Perhaps they simply do not properly assign authorship to commits and everything was run through him, but that practice would be virtually unheard of in the open source community.
Micay and GrapheneOS currently acting like a change in ownership is no big deal and people won’t notice an impact at all is, to me, a massive red flag. 
If we think about Moxie departing from Signal as a comparison, there was a huge amount of work and communication on their end via their blog etc. to make sure that transition went smoothly, and they had a clear team ready to take the reins. Moxie wasn’t even the main guy at Signal, sure he was the CEO, but they had multiple actual verifiable people doing the technical work. Signal was clearly a team project with a transition plan in place, in a way which GrapheneOS doesn’t portray itself as.
Contrast this with GrapheneOS, where Micay ruled as project dictator and near-sole Git contributor for years, and now they claim the project will be exactly the same if he just leaves? This does not add up, and needs to be scrutinized by the community in the coming months to make sure they actually live up to this promise.
It would not surprise me if the replacement they do find is just a Micay sockpuppet, tbqh.
Edit: After looking at their GitHub further, I have found lots of work recently done by other accounts, such as @muhomorr, but it doesn’t really change my overall point.
I don’t think so. There are countless examples of fantastic, constructive, and brilliant projects and leaders in the privacy space. Micay is really the only example that comes to mind of someone who constantly lashed out against and actively hindered nearly everybody he came into contact with, unless they enabled his harassment against others 100% of the time. I’m glad the community finally does generally see this behavior as unacceptable, and it only took a video from Louis Rossmann to do so (despite there being so much prior evidence of this for the past few years lol). I hope this was a wake-up call for Micay, and he actually sees this video as constructive criticism about change that he needs to make, and not yet another “personal attack” against him.