Extreme green potion attack speed?

I think people are getting confused about the "available only" text. It doesn't say the "The effect is available only" like the Root Abyss potions do, it says "Only available in monster park extreme", which they are, since it's the only place that drops them.

The video of the Xenon confirms that them being usable outside is not a bug, or else it would have been fixed by now.