Like, would Hephaestus be the god of magnetos, distributors and capacitor discharge ignition systems? Or does that count as lightning and thus be Zeus’ problem? Is Oden the god of whiskey because it necessarily must be made in oak barrels, or being booze would that fall under Dionysus? Is Mercury the god of SMS?
Dionysus was the god of wine-making not booze, so even if you mix pantheons, if anyone in the Greek Pantheon would have a conflict with anything related with cereals it would be Demeter, but her responsibility ended at harvest so it’s fine. Zeus uses thunderbolts as weapons but they are made by Hephaestos, so electronics would be on the latter’s sphere.
Doing a quick Google search, apparently Silenus was the god of beer and drinking so he’d probably get custody of whiskey and other spirits unless specifically delegated to another god like wine.