I don't think you should attack frontally others like that whenever 😶
Reminding security is privacy is good.
Responding to attacks is good (which is not the case *here*)
I understand its CEO and the Murena company might have attack the GrapheneOS project in the past, and responding to that was normal too.
But I don't see attacking /e/OS like that often as a positive feedback in general. A simple reminder could have been enough.
❤️ on the GrapheneOS project btw