Been known for decades that gut bacteria invented & built cows, because they needed a warm, moist transportation system, and knew they’d never be able to power & drive cars.
The proof is that, although cows ingest it by the ton, they can not digest grass; but the bacteria do eat it, keeping the cow powered with their waste products.
This is just an extension of that.
I like your comment.
Olaf Stapledon-ish.
Mammalian life is a fight against bacteria. Have we tamed them, or are they using us, as you suggest.
Is that your gut feeling?