Biochemistry is often like physics, in that you're imagining things happening instead of watching them. That video brings life into what was before just an intellectual understanding. It almost looks alien. It's like we cracked the atom and we're watching inside.

Well put.

The Richard Dawkins in me wonders how that's possible 🤔

It helps to think of the population as the organism, not the individual bug. If only 10% of the cells figure out how to avoid antibiotics, but they do it faster than cells from another organism, they're going to win. This is particularly nice for organisms that are (more or less) clonal.