What if you buy food from someone you know murdered children to get it? It’s so obviously wrong that buying food is never an immoral act. If you are interested in having philosophical conversations, then you really need to go back to the basics. At this point, you’re trying to join an archery competition with a nurf toy. There are undeniably immoral ways to get food. Destroying the planet and torturing animals for slightly cheaper food that you do not absolutely need to survive is absolutely immoral. The reason it is so hard for you to see this is because you are an addict making excuses. Not because you are starving and need the cheapest, most despicable food.