Do you think it is good they are digging in the trash? Surely there is a better alternative to this. You may not like the wording but the parent is not wrong.
i've addressed this elsewhere in the thread: of course i don't think it's good but it's not their fault! it's our fault! that's where the parent is wrong because they're not exploiting anything - they're eking out an existence.
"The recycling deposit isn't a bounty. It's intended for the person using the goods. If they choose to forgo it by putting it in a bin, it shouldn't go to some random person digging in the bin, but should go to the waste department, which is expensive enough without people exploiting this incentive."