I don't believe sitting on a lead is the same thing as pinning as soon as possible. Sitting on a lead is winning by 1 or 2 points and not continuing to score by being safe. Which will always bite you in the butt sooner or later. The best defense is always a good offense.

And every tournament is practice til state. Wrestlers in the room get used to wrestling each other. Opening up on strangers on the mat gives you the chance to hone and fine tune your skills.