The only time P&G could ever be bad for the starter is if you were turning the ignition and trying to pump start at the same time, it would be the equivalent to trying to turn the engine over with the starter when then engine is already running. If you aren't specifically telling your car, via turning the key all the way over like you would to start it, then the electromagnets in the motor for the starter are not activated and the spindle inside the starter motor just spins like it always does when the engine is running.
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