Is there some unspoken rule to not use Esuna/Leech?

[Skivvy]

Sometimes i don't notice the status effects.

._.

Shooooot, if I'm drinking, you get what you get!
kidding. liquor doesn't like me anymore.

But really, sometimes people do just miss things. If it is constantly being missed, then it may be a definite playstyle/skill thing.