There are similar biblical examples, the prophet Micaiah the son of Imlah who was up against 400 false prophets who were manipulated by a lying Spirit (1 Kings 22). Then Jeremiah, a true prophet who was opposed by many giving false prophecies for example Hananiah (Jeremiah 28).
There are false prophets, there are true prophets. The challenge I think lies in the hearing, the discernment.
Some people who claim to speak for God will be and should be listened to.
Some people who claim to speak for God will be well meaning but wrong, sharing the delusions of their own minds (Jeremiah 23:26)
Some people who claim to speak for God will be deceived deceivers, speaking deceptions from the devil (2 Timothy 3:13)
God Bless