Right, though my assumption is the relate statements are in the context of the comment I replied to, that being an individual using only systems owned by them. As such, beyond my prior comment in this thread, I'm not aware of any law related to an individual that would bar them from deleting data at will assuming to legal request to do so was expected or in place.
Opening up to any situation beyond that would be dependent on the context of that situation.
If I am missing something, please explain explicitly what you are referencing.