Poor reporting
Not only is the picture of an old technology, its also the wrong technology.
This new microbial cell uses osmotic pressure as a power source, the idea was taken from the experimental Norwegian osmotic interface generator that uses an osmotic pump. Basically anywhere you can put an enclosed volume of salty water next to one of less salty (waste or fresh) water separated by a special membrane, you will get a pressure differential from Osmosis, the passage of water molecules through a membrane that allows them and nothing bigger to pass. (Artificial sausage skin is such a membrane, I remember being shown this process in school 30-odd years ago...)
This pressure is used to pump the water into a completely different process, that has nothing to do with the dead MFC tech that you linked to on Wikipedia.
Also, it has nothing to do with the piezo-electric generator California is considering for the road surfaces. Thats a total non-starter as well...
Imagine a world where we buy electricity to power our devices, and food to power our bodies, but our power companies harvest the kinetic energy we produce from food to generate the electricity to sell to us. Not the best deal unless you are a power company, right?
Theres green and theres green, but I'm so not wet behind the ears.
