I think the debate here hinges on 'infusion' as you find it in the dictionary and the more specific use when talking whiskey, or vodka or whatever. Sure, whiskey picks up flavors from the aging barrels. So, I suppose by dictionary definition the barrel is infusing flavor. But, infusion in the spirits world is typically adding a flavor, chocolate, hazelnut, bacon or just about anything else you can think of.
Or, I could be completely wrong, I'm certainly no expert.
Or, I could be completely wrong, I'm certainly no expert.