Good grief!
What your watching is the recycling of plastic bags, they get shredded so the feed easier then they go through the extruder and then the pelletizer. From there it gets dried, bagged and resold to companies in plastics manufacturing or it gets mixed back in with it’s own feed stock. Once melted plastics just like most other materials lose some of their properties so recycled material is introduce to virgin feed stock in small amounts. Western container company makes all the bottles for Coca Cola out here on our Airport, they have 144 cavity molding machines and in the process of molding the preforms or blow molding the preforms they get rejects. Those rejects are shredded and run back through another extruder and pellitized so they can be recycled. These are not drawn out into strings and then cut they come out molten and directly into spinning blades to be cut into a workable size. The reason for peletizings is to get the material small enough so it feeds into the injection molding machines reliably. That is all your seeing here, they’re not making fake rice. What some people will fall for never ceases to amaze me.