Do we have to believe this will scale and be "generally useful" (whatever that means) in order for it to be interesting enough to talk, discuss and think about?
My reaction is more, how does this work, what is it about mushrooms and mycelial networks, and sure, what is possible - but not, how soon can I monetize this
"what can we use it for?" I'd understand why someone would ask. Maybe not specifically in this case, as it's outlined in the abstract and paper itself, but I generally understand that.
"will it scale?" I'm not so understanding of, for a submission about early research, it's one of the less interesting questions about it, and something you figure out much much later, and wouldn't invalidate these results no matter what the answer to that question is.