As much as I resent it being the way of things, money is power under capitalism. Where possible, I try not to cede mine to people looking to do nefarious things or disseminate shitty ideals. While I don’t have much personally and Kant was a pretentious douche canoe, I’m still idealistically partial to the universal maxim.
Yeah, no ethical consumption under capitalism or whatever but we can try not to prop up people who are brazenly making the world shittier. Thinking our actions don’t matter is how we get complacency.