He’s probably overly defensive and paranoid and interprets some forms of criticism as attacks.

I think this was also a result of his “miscommunication” in the past

there might also be parties involved who are ACTUALLY interested in attacking GrapheneOS and weakening its popularity, for their own gains.

when your successful and also high-quality project is under regular attacks from various angles

Rossman’s over-dramatic nature and high reach

then communication spirals out of control into various escalations

You should actually look at any of the copious amounts of evidence that involve this conversation instead of just imagining what it might look like. There's really not much else to talk about until you do. Daniel has given us zero evidence to support his side, while in contrast there's a mountain of evidence against him.