Yes. Whiskey is made with grain. At the far remove.....
Do you know what gluten is? Can you diagram it up on the board? It's a complex, semi-solid structure according to McGee.
There is NO gluten is well made whiskey. 'Tis a far remove from those proteins. They get broken down by the enzymes in the malt into short-chains that the yeasties can eat to produce CO2 and ethanol.
Science is a grand thing, if one has a clue.
/johnny