And?
> Google is not expressly clear that they don't have your encryption keys on Lollipop and lower;
They have explicitly said that if the device is encrypted they don't have the key.
> They definitely have the keys to your encrypted data on their servers no matter what, which can include complete backups of your device
Source for that?
In other words, if you can ever actually use something, it's probably not secure.
And?
> Google is not expressly clear that they don't have your encryption keys on Lollipop and lower;
They have explicitly said that if the device is encrypted they don't have the key.
> They definitely have the keys to your encrypted data on their servers no matter what, which can include complete backups of your device
Source for that?