a powerful worker of faith would have command over demons.

Maybe. But the article is about a rabbi who harnessed the power of demons to perform miracles. That's not a good thing.

That's exactly what the pharisees accused Jesus of, i.e., they claimed he used demonic powers to miraculously heal a man.

"And the teachers of the law who came down from Jerusalem said, “He is possessed by Beelzebul! By the prince of demons he is driving out demons.” (Mark 3:22)

a powerful worker of faith would have command over demons.

Maybe. But the article is about a rabbi who harnessed the power of demons to perform miracles. That's not a good thing.

That's exactly what the pharisees accused Jesus of.