We recycle both our bottles and our used motor oil through our scavenger company. I do not know for sure, but I will bet you that the scavenger company is collecting the money from the State for both of these items. For years the scavenger companies fought having to collect “recyclables,” now they are “all in” for these programs, so there must be substantial money involved.
We go to a recycler and they very scrupulously differentiate between the bottles that have a deposit and those that don’t. For glass and for plastic.
The only reason for this would be that the deposit bottles are worth more. The only way they’d be worth more is if the recycler is getting some of that deposit money back.