This may be another bit of snake oil but I have heard that acidity can act as an anti-bacterial agent. Hypocrates drank Apple cider vinegar and swore by it. Still in use today.
I drink it fairly regularly for my health and whatever you drink comes through your skin pores so don't let me handle your nice guitars.
If the acidity acts as an anti-bacterial on your hands then taking that away could get you sick...or I could be full of poo.Just some things stirring around in my grey matter may or may not be factual.