Ya'll acting like the plays were specifically drawn up for Kirkwood. He was one of 4 or so guys running routes. He ran his routes well enough to get separation. Pass rush pressure and who is getting open based on the coverage determine who the QB chooses to throw to.
Kirkwood beat single coverage on both plays. That's why the ball went to him. He probably was at best the third read. It's really bizarre that people want to talk about this like he was the featured player on these designs.