So Nexon didn't totally screw over those of us who got Iruvata Boosters

Waitwaitwait, I thought that quest was not worth it at all because of the super-low chance of getting Iruvata Boosters? Did they change it?

The chance has always been 50%, the actual quests just have been really glitched in the past (and still are, you might not get a quest at all).

And if you fill your inventory with etc drops expect for one with Booster, you'll get a Booster 100% of the time. It's the classic trick for quests with random rewards, a nice way to farm specific scrolls from random scroll quests.