Interesting but a bit unfocused.

You're constructing an analogy between the individual microbiome, our universe within, and our macrobiome of the internet and our human reefs (cities). Your point being to highlight how inseparably interconnected we all are.

Your main point, about how we need to see ourselves as interconnected and "think differently about our shared spaces", gets lost in the gross-out microbiology. Interesting but a bit unfocused.