True. Anyone can make it up.
The Bible has the true test of a prophet.
What the Bible says about Test of a True Prophet
Deuteronomy 18:22
This is a simple test. If a man claims to be a prophet speaking in God’s name, God’s people should prove the veracity of the man’s predictions. If his prophecies do not come true, it is obvious that God is not speaking to him or through him. Such a man is a false prophet. We should neither fear his words nor feel compelled to obey them.
Even if the man’s prophecies do come to pass, we must beware. God warns us, “Beloved, do not believe every spirit, but test the spirits, whether they are of God; because many false prophets have gone out into the world” (I John 4:1). We need to be watching for the fruits of God’s Spirit in those who would claim to be His representatives.
I predict that death rates will accelerate noticeably in 2023, adding greatly to the war, economic and political impacts that are coming. If I’m right, I will ping this comment as proof. Otherwise I won’t.