How far down do you have to scroll on https://grapheneos.social/@GrapheneOS to find a citation to a source for one of their claims?

At the time of writing, I scrolled 4 posts down and found one. GrapheneOS are security researchers, so they often are a first party source. As for the attacks, they have plenty of evidence for their claims. They avoid giving any attacks more publicity, but they usually provide evidence if you ask.