>>280301247
>I don't even know how /vrg/ knows it's an outsider unless there was some kind of list they had...
It's pretty easy.
If you neither declare or otherwise signal to be from the thread or 4chan at large, and simultaneously also nobody happens to know you (besides maybe the one person who was your entrypoint), then it can reasonably be assumed that you are not from /vrg/.

Like, imagine sitting at a christmas family dinner and some dude comes walking in from the front door and sits by the table, and he doesn't know who Karen (the host) or what that family thing you do every day is, and literally no one knows who that guy is or who invited him, either, despite everyone else knowing each other. Wouldn't that be fucking weird and totally obviously someone from outside of the family?