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All non-volatile memories have a limit to the number of write-erase cycles before the circuit will begin to deteriorate. The cheaper the card, the fewer write-erase cycles you'll get.
But in a dashcam camera, assuming it's only being used a few times a day, you should get years and years of usage before that deterioration sets in.
Have you found any of your cards throwing up errors after long periods, or require regular formatting? I didn't realise until recently that SD cards wear out. Had to replace my decent microSD from my dashcam recently because of this.