NO PLS RECOVERY.
The idea is if someone steals your phone, they can't just restore it like normal via iTunes. They will get an error. If you can recover your phone then you get your device back with your data intact.
The first time I forgot I had it installed and so found out rather quickly how this works.
The second time I didn't want to bother having to uninstall it. So, DFU mode was the answer.
I think too, it's just easier and avoids any problems which is why I suggested it.
Of course, if a thief is aware of the tweak or DFU mode then this is not going to work, but the idea assumes that a thief either doesn't know or does not have the time.