It isn't paranoia if they are really after you!

Carbon steerers and handlebars are less forgiving than their metal predecessors so paying attention to the torque recommendations is a good way to keep the entire bike under you where it belongs.

Having broken a handlebar clamp bolt on a steel stem no less and gone through the resulting crash (at very low speed fortunately) I have a healthy respect for doing it right. Four bolt faceplates torqued properly are your friends.