Most of HF energy is in the form of neutrons. It would be difficult and expensive to convert them to a useful form of energy such as heat or electricity. HF reactors components would become highly radioactive after use.
CF produces mainly heat which can be used as is or converted into electricity.
CF reactors have already produced hundreds of times more energy than the best HF reactor in history, although less power. I don't think it would require much money to develop a working CF prototype. This is where some of the trouble may come in. Since I can understand the measurements, they must be pretty simple. Mizuno's does, but he has used several top-notch meters, so I am confident there is no problem.