Specifically, they reference Kinetic weapons. The patch notes reference primary weapons.
Why is this important? There are Kinetic Sniper, (Linear) Fusion Rifles and Kinetic Grenade Launchers. Does that mean that they generate more ammo for themselves by getting kills with them? That Energy primary weapons generate [i]less[/i] ammo than Kinetic primary weapons by default?
Changing the terminology to Primary would only cause confusion with Fighting Lion, which wouldn't even be that confusing... It has infinite ammo.