Like I said, you would be surprised.
A lot of activity takes place just beneath the radar. For example, there are many newer posters (date ranges from today-90 days ago) who frequent threads that are about specific racial issues. These posters are slick. They'll only say enough to where it won't genereate an outrage, but it's still heated comment(s).
I say this to demonstrate that people are not stupid. You can't come out and spew overtly racist speech here, so what do they do? Multiple user accounts.
Think about it.
Whoever this is I don't think is your average troll. This person or persons have been here for a long time. A long, long time. What gives this away? A true newbie, even if they lurk for a while, still has to get the lay of the land as far as posting threads and replies. If you have a straight up newbie coming across as experienced, what does that tell you?