Most houses I’ve looked at don’t even have them (at least visibly) but I’ve seen them on office buildings. Doesn’t the lightning still burn the house/area the rod is attached to?
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Lightning rods are typically isolated from the house and direct the current into the ground, they are also *much much much* more attractive for lighting than anything else on the home (ideally) to strike. The lightning wants to go the Earth anyway, it can either stay in the highly-conductive rod/wire or leave the wire and enter wood/brick/drywall on the house. Why would it leave the rod/wire? Think of lightning like an obese midwesterner and the rod is lobster at the all you can eat buffet. It’s *that* appealing, ain’t no one saving room for the steamed asparagus.
Anywho, yes, there might be some damage to the structure but these components are somewhat sacrificial, you don’t really care if there are some little melting or burns where the tiebacks connect to masonry, but it’s unlikely enough to cause a structure fire.
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