It’s very close to begging the question, though. It really depends on OP’s actual intent, which is hard to determine through text. But it does seem like it could have a, “Those of you who still hate GrapheneOS, why are you wrong?” tone to it.
Edit: Reading through OP’s comments, they do sound genuine to me, I’m mostly just explaining why someone might mistake the post for begging the question.
Thanks, I had considered linking a reference, but I didn’t think he was disputing the definition. He was disputing my analysis that this was a valid example of the fallacy.