HI I don't remember Jim Jones or Waco saying they were prophets. Could have but I don't remember that. False prophet is not someone that teaches/preaches some doctrine we don't agree with. Some would call them false teachers yet in most cases its they just teach something someone else does not agree with/believe.
Now there are so many prophets today never see so many. Now some of them are false They can get things right many times but false as in God never told them.