I assumed the reason why it cancels out Poison is because Poison is actually a gas and works like a gas. Wind cancels it out because Wind basically blows the toxins away.
Poisoned status effect also make it look like your character is surrounded by a poisonous cloud. Its basically similar as to how Water clears Acid if you think abt it. Poison and Wind is basically the same as Acid and Water, the two pairs are Air and Liquid magics respectively, one is toxic, the other is normal
Can we just say that Light stops wither because Light counters Shadow, and thus it counters its effects as well on a person and which is not necessarily healing?
We literally never got an explanation on what Shadow’s wither effect truly is and here you are claiming that since Light clears wither means that it’s divine