Considering all plants used to be simply edible, I'm questioning if they decided on adding crafting somewhat late into development. It's not that big a hint, but it's... odd.
If the plentiful antitodes lying around everywhere disappear and are mainly craftable in the future, that would make sense?
Poisons and antitodes aren't gamechangers (when you can dip your weapon into a candle!). I assume it will not be a big thing and just some small mechanic. It just feels like it was introduced too late to be complex, quest items nonwithstanding.