[mamelukesabre]

When I was a kid, my dad had a buddy that kept bees. He did take the “bad” honey from people(yes I know it only needed to be heated until it melted) and claimed he fed it to his bees. But now I’m wondering if he was lying about that and was actually just heating it up and mixing it with the honey he harvested and sold.

[7MMmag]

He could have very well fed it to his bees. If it has crystallized once, it will do so again. Why risk it, particularly when bees need some amount of stores to get them through dearth.

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.