Characterizing Paul Stamets as weird or eccentric seems a bit off. He's no more weird or eccentric than any other scientist I've met. He speaks openly about an experience he had with psychedelic mushrooms which he says cured his lifelong stuttering, which sent him down the mycological rabbit hole. He's worked extensively with the DoD researching antimicrobial properties of fungi, his publications look sound, and some of that work seems wildly beneficial for cancer treatment: https://www.youtube.com/watch?v=7agK0nkiZpA