It would be one thing if Briscoe announced that "elevated" REE were found, or a REE "anomaly". Despite never providing any evidence to support statements like those, one could give him the benefit of any doubt.
However, in that post on Agoracom last night, he simply said REE were present. He worded it that way on purpose. It's like saying silicon is present all over the Hay Mountain claims, or iron. Of course they are.....