That's my point. We are one of those 5 people. Daily. What we consume, eat, how we influence others, the agenda we vote for, is a choice. The bacteria has no such choice, we do. So we can, and should, take a moral stand. Always.
Choice is not black and white. Bacteria have a low amount of choice. Most humans have a fairly high choice compared to most animals. Among humans, some have more choice then others. We can pretend that morals are special and different, but they too are the product of some chemical machinery.