This is the actual reason his manner of communication is poor - swearing and generally blunt language like this should be reserved for shaking people into actio

This is the actual reason his manner of communication is poor - swearing and generally blunt language like this should be reserved for shaking people into action, whether it's due to their otherwise ambivalent attitude or the severity of the situation. By making a big fuss for every moderate concern he has, he leaves few options open for when the situation demands that people spring into action.