Not kidding at all. I visited the plant and the MR
Post# of 43064
It is true that frequently there would be super sacks of just one type of plastic. That was a consequence of them getting large shipments from a single source that produced primarily one type of plastic waste.
Case in point. Crayola has primarily just two types of plastic waste and they are not co-mingled.
Other supplier companies will be similar in that regard.