Seriously just stop giving this person a hard time. They voted for what is right, at least. Whether they identify outside of that party, who cares? It’s not going to change (and in any case worked in your favor toward) the election outcome, which is what you are actually upset about.
Tariffs will drive the prices upward but consumers will still be compelled to make those purchases for a time, which is to say that they will just bite the cost because the alternative is less desirable. This demonstrates a lack of equilibrium between price and demand. In a non-elastic scenario, the rise in price would directly correlate to a decrease in demand.