Many times i've seen a 'story' develop, that's a romanticized narrative created that sounds plausible to the passers-by, but isn't grounded in science, and either doesn't have anything to back it up, or is caused by something else entirely, but not recognized as such. This narrative can pick up momentum such that others begin doing it as well (there was a trend here for a while, for example, where people thought wearing magnetic bracelets would cure everything. It's complete and utter bollocks, of course, but they still sold millions of them.)
If you're storing your liquor to age it, there's not a great deal of benefit to doing so other than you don't need to run your production equipment as often, and logistically it may be easier.
If you're storing your chocolate to age it, there can be a benefit to doing so if it's stored in it's final form of consumption. If you're storing bulk chocolate with the intent of further processing it, there's not much benefit to doing so.
A very large chocolate user (not, not producer, they use chocolate to make candies that actual industrial chocolate mfrs produce for them - but they use 10's of millions of lbs of chocolate/year), used to mandate that the bulk chocolate produced for them be aged for 90 days before they would use it. Why? Because at the time the owner of the company (it was a private company) - his mother believed that doing so was necessary for the chocolate to taste 'right'. Crazy. He allowed his mother - who's not part of the business - to drive immense supply chain complexity that had absolutely no bearing on how they used the chocolate. Craziness that added zero value (in fact it added carrying costs) to their business.