I'm sort of on the fence, here. It does seem like "rare" poisons like heramide are FAR more common than they were 6 years ago. I assume that the location of it was probably leaked OOC somewhere at some point.
But I also wouldn't want to see poisons dropped to some crazy low timer like 2RL hours for a number of reasons that Armaddict and Harmless pointed out. I really don't think I like the idea of poisons expiring on blades at all. And I don't want to see them nerfed, either.
If I'm correct, and the location/s of rare poisons(peraine/heramide) was leaked OOCly at some point, maybe the solution is really simple: Move the sources IG.
Maybe even make the sources non-static, similar to the nomadic tribal encampments that appear IG, where they move around from time to time and can't always be depended upon to be found in the same exact location, representing the growth, harvest, regrowth cycle in a way, in multiple areas, that sort of works to make it less easy to just know where they're at all the time, and encourage more IC exploration.
It might be a good policy for staff to simply revisit this once per RL year, changing the locations of the cycling spawn points to give explorer players something to find, and keep the poisons rare that way.