It’s not needed.

If another law says you have a right to create backups of digital content you own, then two laws are in conflict. Why would dcma have precedence?

No idea about US, but in some countries it would be up to judges, and with enough rulings it would be settled one way or another.

It’s not a belief. Animals being sentient is a fact. Animal agriculture being inefficient and wasteful is a fact. Animal products not being necessary for our survival is a fact.

Now you could argue that killing sentient beings is OK, but then that’s a weird moral position. And nevertheless, not a belief