Are you actually a Nats fan? You seem to actually wish for the worst case scenario for the team. Maybe “Slateman” is a closet Phillies or Mets fan.
He's crazy enough to think he can reverse-jinx the team. It's not just with the Nats. He's been posting all season in the Caps thread about how they're going to have a disappointing season, go one-and-done in the playoffs, etc.