Ironically, the idea is more useful than intended. One could, for example, store on/off user's preferences in the cloud without the hassle of local storage, survey responses, or even control IoT devices remotely with just the switch of a boolean.
A boolean might indicate if it's snowing in NY, for example (Read-Only for most people)
Now seriously how is this any good since you can only save one bit. MongoDB as a service is probably what you're looking for...
It only makes sense to back bools up this way if len(n) > backup key.
If you could backup 129 bools it would make sense because you'd only have to remember the key, 128 bit, to access the backup. If there are equal or less, just remember the bools directly.
This is useless for anything serious.