He didn't bypass shit. It was locked and he asked to erase the phone through iCloud so obviously after erasing the phone it's restored and unlocked, even Apple says this happens very clearly. Now try bypassing it without a password for the iCloud account.
Well, you're using your iCloud password to wipe the iPhone and reinstall the OS. But if the iPhone was stolen the one who stole wouldn't have your iCloud password or finger print. The phone will be iCloud locked forever and can be used only for parts and for nothing else. Probably you should show the audience what you were doing on your laptop.