Quite a bit. Most of the deforestation you are mentioning happens for monocrop cultivation, from which livestock consume (mostly) the leftovers. That's usually hidden in data by using total weight, but the reality is that 86% of the dry matter consumed by livestock are not edible by humans [1].
[1] https://www.sciencedirect.com/science/article/abs/pii/S22119...
>All improvements are good, but I'd like to know if this is more than a distraction to make people feel better about continuing to demand products they know are damaging the environment (e.g. Amazon deforestation).
Both are compatible. You can be against the Amazon deforestation and pro-reduction of emissions of current cattle. Most of the beef consumed in the US (~90%) is raised in the US.
> Industrial farmed animals aren't eating grass, they're eating crops like soy. If you find soy milk and soy-based meat alternatives decent for example, consider eating those directly instead of products from soy-fed cows - it'll be vastly better for the environment with seaweed or not.
Ahhh... No, thanks. It will also be vastly worse for my health.