Not sure if this is sarcasm or not, but this is probably a reference to reddit's r/trees subreddit's way of noting how high the user is. It's a 0-10 scale, 0 be

Not sure if this is sarcasm or not, but this is probably a reference to reddit's r/trees subreddit's way of noting how high the user is. It's a 0-10 scale, 0 being entirely sober. In this context he would be saying that it's mindblowing, despite not being high.