I ask a lot of questions in the GrapheneOS community, I oppose a lot of opinions that are held there, but I have never been "flagged" for questioning or for debating something. The only time somebody is going to be flagged is if they are being outright disrespectful spreading misinformation or just being a general asshole.
In the GrapheneOS community, "being outright disrespectful spreading misinformation" is pretty much anything that brings solid counter-arguments to Daniel Micay's personal points of view. You probably haven't tried debating some advanced security and privacy topics with them.