Recycling older crystallized honey would allow one to take more of the fresher stuff away from the bees, harvesting and selling that.
It doesn't make much sense to go to lengths imagining him blending it with other honey, when the bees need a fair amount just to make it through winter.
While some might take old honey and dilute the good, any bee keeper knows that bees don't acknowledge the fact it is old and will lap it up from the feeder and rapidly deposit it back into the combs for use as needed.
Regarding old honey or any honey and crystallization. The crystallization can easily be reversed by soaking the jar in warm water. The modern way is to zap it a few seconds in a microwave and the crystals will re liquify.
As with most fields of knowledge, several Freepers are well versed. This thread contains a large body of real hard won knowledge.