A prophet who speaks for the Lord has to be 100% accurate. If he is not... well, I wouldn’t stand too close to him in a thunderstorm :>)
And... as far as I am concerned, there is no immunity. However, look what happened to the children who mocked Elijah. Fair warning... shebears abound :>)
Study the NT VS OT standards on such.
Certainly I believe God wants His prophets to speak flawlessly as He instructs.
I believe we’ll see that day. I haven’t seen it yet.
I’ve missed it. Many of the best known internationally have missed it. YET THEY HAVE NOT MISSED IT 1000’S OF TIMES to great benefit for thousands of people.
Discount that all you want. Those thousands of people have had their lives brought closer to God; become Saved; healed, delivered, matured in The Lord because of those prophecies.
Trash them at your own risk.