No, I directly addressed your points, you just dont like the answer.
You keep talking about meat subsidies, so I assume you're in the US. Im also in the US, everything Im telling you I tell you within the context of food nutrition and prices within the US. Let me know if you're somewhere else and Ill do some extra research to show you what I am telling you is still the case for you because meat just gets more expensive in places outside the US.
Im also assuming you're in the US from your assumption that only meat has appropriate protein for diets. You dont know food. You might know beans have some protein in them, it's quite a good amount actually. But you probably dont think potatoes have a single protein, or corn, or rice, or pasta, or flour. They've all got protein in them, they are staple foods in other parts of the world for a reason, they meet nutritional needs.
Things like vegetables
no no no, this is a strawman, I didnt say vegetables. I was specific. What I gave you was a list of foods that are cheaper per calorie. As a bonus, most nuts are pretty expensive so I wasnt mentioning them, but peanut butter is another high calorie, high protein food that's often near the top of charts of calorie per dollar ranking.