Ok they make their own ATP and NADPH also. I admit i am not well informed about their biochemistry. However, my point is that they just don't convert simple molecules into macromolecules just like that, or because they get solar energy. They do so because there is a complex template already existing in them. Every reaction is happening for a reason because of the template and is unavoidable to happen because of natural laws. A chaos of anabolic and catabolic reactions is happening, and the bacteria leave the culture overall in a mess. You are just ignoring everything else, and just focus on how ordered the new bacteria are. However, in real life all the by-products of their metabolism (waste, gasses,etc) become food and ingredients for other organisms, so they cannot be excluded from the chemical cycle of life. In reality all organisms are sustained because the ingredients somehow recycle. This is important because you think that life gets energy and overall forms orderly structure locally. So according to you, when life expands, it adds up its order and the order of the now expanded system has dramatically increased. So life can be formed once in the form of a cell, and then it has the property to multiply order by converting everything it can find. The "gap" here is that this cannot happen just by putting chemicals in the sun, or if you expose an ordered system to spontaneous reactions in the light, it will naturally tend to decrease its order with time instead of increase. In reality, all life today (like proto-life) is a big chemical system. Its parts do both anabolic and catabolic reactions, but overall they leave a mess. However, we are super selective and we just pay attention to what look like us functionally, and we see only organisms, etc, ignoring all the chemical flux that is a legit part of the chemical systems exactly like we are. At the end of the day, food is a part of our chemistry. We can't live without it.