I remember thinking this when the gas station I worked at started carrying DEF. lots of big plastic jugs. I’d bet 99% don’t get properly re cycled. And as a former gas station employee I can tell you they are a PITA. Either truck drivers leave them laying near the pump, or they try to shove them in the trash. Only about 3 of them fit in your average 30 gallon diesel pump trash can. So it creates a lot more clean up work, and that if they don’t end up blowing away.