Eh, if someone comes up with such a comparison it immediately tells that they don’t know what they’re talking about. Like, linseed oil was also used for waterproofing (oilskin), yet it is quite healthy. Other applications/occurences of a substance simply don’t tell you anything about it being good or bad for you.
This is why you should keep backups, which, for me, includes physical printouts of access data stored in a safe location. That’s also helpful if something should happen to you.