Bastardry yes, but not because he is feared. More likely to say 'that pricks a bastard lets go bash him'.
He's a flat track bully. When was the last time you saw Brown get over the top of a proper enforcer forward? Say JWH or Fisher-Harris? He will do well when playing the bottom dwellers of this season (predicting Tigers, Titans, Dragons) but wouldn't make a dent against Storm, Roosters, Souths, Penrith or Cowboys.
When I think of a real bastard opposition player its JWH or Asofa-Solomona. Hate both of them but have to respect what they do for the team. Brown as some sort of enforcer is laughable.