Why are Physics Handles added in Content Examples, but never destroyed?

I’m trying to understand how Physics Handles work. looking at the PlayerCharacter BP in the Content Examples, I can see that on mouse click a “Add Physics Handle Component” node is used to attach an actor returned from a line trace, but that runs every mouse and I don’t see the component getting destroyed.

Is it really adding a new Handle component every time I pick a cube up? Is it small enough to not matter performance wise? should I be calling destroy component after I drop the cube?

Thanks in advance.