Which is why McNally (the youtube in the title) demonstrating poor locks that can be opened by simple bypass attacks like shimming or whacking is especially damning for those locks. You can always destroy a lock with brute force, preferably power tools. You also spend years honing your lock-picking skills and open any keyed lock in less than a minute, but good locks make this a difficult craft. But shimming a padlock or whacking a masterlock with another masterlock takes no skill, doesn't leave evidence and allows you to relock it when you are done. It defeats every protection the lock was supposed to provide