The horror that it is when I don’t want to indirectly support policies I don’t agree with.
I bet you probably don’t want to help mass-murdering pedophiles either but here you are exhaling CO2 which will get incorporated into a plant that some mass murdering pedophile will eat.
Just draw in your sphere of concern to that which you can actually affect with a reasonable degree of predictive accuracy.
This way you kill two birds with one stone: you maximize the amount of actual good you create, while minimizing the sort of mental allergic reactions that come from chasing after smaller and smaller, more and more distant and ambiguous causal connections to global events.
Perhaps I misunderstood your use of the word “indirectly support”?
How would you find yourself indirectly supporting bad policies?