When Benny tries to restore data from the hard drives, you can see the rotating platters in the opened drives. First, it is not necessary to do that to restore data from a physically undamaged drive. Second, the data on the platters would be damaged/destroyed because the dust in the air would come in contact with the platters (that is why professionals open hard drives only in clean rooms).
The only time that disc recovery would involve opening a drive would be in the event that there was internal damage that did not involved the platters, an example being a damaged logic board. In such an instance, they would find a precisely identical hard drive, remove the platter stack, and replace it with the stack from the damaged drive, then seal the drive up before beginning recovery.