That mod said on more than one occasion that he was a femboy and he's used he/him pronouns to describe himself. I'm not misgendering him just because he chooses to sometimes call himself Agender but almost never really refers to himself that way. If he actually is I'm really confused since most Agender people aren't also femboys.
When people haven't lived the experience they won't have accurate knowledge on the subject of the trans experience, and shouldn't be telling other people whether signs are valid of being trans or not. Signs are valid and can identify someone being trans before they identify it themselves.
Cassie seems to support the idea that many trans people need help, that they are terrible at listening to their inner voice. She even craved it herself. I don't think this helps that mod's cause, if anything it just shows how bad what he's doing is.
That mod is denying the validity of signs off being transgender, and saying they aren't signs. In a community dedicated to breaking out of denial and recognizing that one is trans. I have been invalidated a lot and I've been in fierce denial, people shouldn't have to live through that, they should be helped out.
I also don't think the mod was trying to silence me specifically but any criticism of his words. Maybe he didn't want to call negative attention to himself and get removed as a mod for permanently banning a trans woman from a trans community, he still banned be though, and he locked the post so people can't criticize him for saying those awful invalidating things.
I used to do it too to roleplay, and for some people it means nothing, but if you're doing it all the time or regularly, it's more likely that might be a sign... I did it all the time, I even drew pictures of myself as a girl, all the signs were there.