Yeah, I think it's just a pragmatic layman's term for a good headline. I've complained over the years to my wife I'd like a "reverse microwave" for exactly this use, so it certainly clicked with me.
That is like calling ice a reverse fire. If the technology doesn't have anything to do with microwaves, I don't see how the "reverse microwave" adds anything but confusion. It's not as though "chills beer in 45 seconds" is so vague as to require a strained microwave analogy.