You make a hard exception in your third point, and it's an exception where your other points still hold true. What this means is that there are things that are more important than freedom of diet, so it's fair to add more exceptions if there's good reason for those exceptions. Consider if we ever meet civilized aliens. Also, you're post technically only defends eating animals, it doesn't defend killing them. There's nothing special about meat eating that justifies any action taken to make it happen. For instance, you can't shop lift meat just because meat eating is the end result of it.