What a lot of people miss is that rushing isn't just about time, it's about heat control. When you charge fast, the outside heats up way quicker than the inside. That creates stress points, and your gather can't handle it. It's like trying to bake a cake on high heat, the outside burns before the inside cooks. So the old hands are right, but they might not explain the why. It's basic physics, but easy to forget when you're in a hurry.