But the argument is trying to make the case that order requires intelligence. If it looks like regular motion of a planet can be explained by gravity, Aquinas is claiming that intelligence must be behind gravity for it to create such regular motion.
IOW, it's like someone with extreme pareidolia assuming that everyone else has it and that it's about external nature instead of how he views it.
The better place to focus, to answer this question is; how did human consciousness and intelligence form from natural laws like gravity, electromagnetic force, etc? For example, human intelligence and consciousness can think both in terms of physical laws as well as fiction. Fiction is not exactly part of natural laws, since it can drastically depart from natural laws. In fiction, trees can talk. The concept of God cannot be define by just natural laws. How can we think of such a thing that is not connected to natural reality, based on known science?
Innovation, such as the first computer, did not form naturally from natural laws. It involved human intelligence, looking beyond what could be extrapolated by natural laws. It added new man made laws; applied science. This is an example of human intelligence defining why the computer does what it does. it still uses the laws of physics, but in a directed way, that is not natural to nature. It was deliberate and not random. It evolved not to suit the environment; no sense of direction, but rather evolved in the direction of improving utility.
Evolution has a hard time explaining how the hardware for the first the replicators appeared. They assume these appeared to get the story going. It is too complex for human intelligence, using only logical and natural assumptions, so chance is used to explain how they appear. Yet, once it happens; first replicators, it triggered a new branch of physical reality called life. It loosely like a white hole in the universe spewing out matter, from another dimension, and from that, all types of secondary effects begin to happen that needed that initial creation.
That brings us to the Big Bang, and the initial causes that defined the current laws of physics. At one point in time, the current laws of physics did not yet exist. They may have had the potential to exist within time and space, but likei innovation, they needed some form of consciousness to make an initial cause.
Innovation does not leave things to chance, which is why it is called intelligence. Intelligence is more deliberate than just chance. The acorn growing into an oak tree is not by chance, but follows the deliberate path of an intelligent design. Statistical reality is not an intelligent design, since it leave things to chance, which adds fiction to the deliberate rational paths of natural reality. This is humanly possible, but not natural. That would make it a tool or innovation, but not part of natural design. It is intelligent way to go forward when intelligence cannot see; black box.