I'm not an idiot.
The case everyone makes for fusing inbetween batteries is that "installation error can cause a fire" a guy mentioned that if you got into an accident that it is completely out of your control, and that too can cause a fire. I never thought about that aspect of it. That is the best argument to make.
After that I was trying to find a cheaper alternative to using 2 fuses, and 2 distrobution blocks.
Chase kept commenting on something he clearly wasn't reading, and still his last comment doesn't make sense in the context of the conversation.