Because they think people keep stealing their charge cables because they need one; and not that they want to want to turn that sweet copper into cash.

The same Courtney Love that killed Kurt Cobain?

The active electronic ones may. I’ll admit I don’t know a lot about those.

The prevention of rust does slow scale accumulation because rust is a rough porous surface that scale likes to stick to. But other than that (anodes also are rough porous surfaces) I’m not aware of any way they actively reduce it. Maybe the electronic ones, but that’s out of my wheelhouse (and they aren’t sacrificial).

Anodes protect against corrosion. They don’t do anything for hard water scale.

Anodes protect against corrosion. They don’t do anything for hard water scale.