I have not concluded anything negative about GrapheneOS. They care about raw deep-level security, and don't virtue signal to be caring about privacy from the vendors (which is an impossible ask anyhow).
Daniel had a bit of a blow-out from the rust community years ago. But that just tells me that he is using his brain cells for programming rather than for healthy social interaction. Linus Torvalds is famous for bad social interactions, and I love his code.
Also I want my OS developers to be paranoid. The risk of that paranoia overflowing into possibly lunatic accusations against innocent people, well, that comes with the territory of needing paranoid developers. So again I didn't conclude anything negative about GrapheneOS. I also don't conclude anything negative about Techlore or Rossman because none of these accusations have borne out any evidence (either they didn't link to it, or whatever they linked to didn't turn out to be what was described) that I have seen so far (and honestly I just don't care) they are just rather unhinged inferential accusations. My point is that this says nothing negative about GrapheneOS code.