I know they're all as bad as each other.
If you're trying to provoke thought, think a little about this statement yourself. This is clearly untrue.
Just because you can always dig deep enough to find a negative, it doesn't imply any sort of equivalence.
I've done things I'm not proud of, but I've never committed genocide. Am I as bad as Hitler?
Now, does that mean that we need to research all of our purchases deeply enough to know every minor cost to humanity and the world associated with that purchase? No, but we can make the best decisions we can with the information we have.
We all have to make decisions based on our own principles and with our own priorities, based on the information we have.
If I knew Tim was a murderer, I might not want to support his business. Up until I knew that, I might have enjoyed his products.
It's not our responsiblity to be all-knowing, but once you do learn something it becomes part of your decision-making calculus.
Then again, even if Tim's a murderer, his soap might be really good.