can't tell you whether or not CF works but I can tell you that if it worked really well,
CF works as a scientific phenomenon.. as attested by 3 decades of anomalous heat evidence.
99% of R&D doesn't work "really well" if by that SOT means " commercially profitable"
If it did work "really well" it wouldn't be R&D .
CF is still one of the many R&D ... as is HF .