Absolutely love Paul Stamets, and this kind of curious insight regarding fungi.
Whether truly, realistically insightful or not, I can't say I'm sure, (I know very little), but I do find it a fun subject to discuss. Very 'larger than life' imaginative like the Hollywood movie Avatar, but also unarguably inspired by the very real reality of nature, as well.
How much of it is simply imagination, how much is reality? That is fun to think about, debate upon, wonder about. My favorite word applied to all things nature is wonder. That's just what it, by it's very nature, being it's amazing and wonderful self, makes us feel, and what it makes us do. I think, no matter what we ultimately conclude, that we can all most likely agree upon that.