Title says it all. The drop rate on it is WAAAY too high for a top end material and needs a serious looking at. It was also confusing to be looting 1-4 empyrean silk from elementals, per elemental in dungeons like storm breaker. 1 expert = most of a stack of silk, which is far too high.
The rate needs to be cut to 1/3rd or 1/4th where it's at to actually make this item valuable, or recipes just need to use a ton more of it.