No I think it is a good idea. Isn't that hard to do. Are you going to try it yourself? You could probably install the grounding rod, and then have an electrician actually make the connections, if you felt confident.
Keep in mind that this will only ground the electrical panel. If your wiring throughout your house is only two wires (no ground) then the plugs won't be grounded still. So it depends on what they are suggesting you ground.
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