That’s an understatement. It’s clearly against the catechism of the Catholic church. https://www.catholic.com/qa/why-mediums-and-psychics-are-not-ok
That’s Catholics, which some sects like the Pentecostals consider to be not Christians. And then you have people like this…
You can find anyone claiming anything, but the official doctrine of the world-wide largest and USA-wide second largest Christian denomination is a bit more likely to be relevant to the discussion than some random bizarre book.