People claim it's been nerfed but...I don't know. I know my grinding habits have changed since the time when I was getting eliminates- I was training mostly in the Mire for a long time and that doesn't drop them.

The pool of rare drops has also been increased over the past year. They made it so everywhere drops elemental eggs of all types instead of only dropping a few, so that could have made a difference. Plus vistas and cleavers. So that could have made a change in drop frequency too.