I'm a bit puzzled as to whether AB is saying that if something has a cause, which we can identify, then it's not God-driven. So if clouds cause rain, than God doesn't. Is that right?
Consider root causes.
The cause of my finger pressing a key is muscle stimulation, which traces back to nerve endings, which traces back to some brain cells. I perceive the root cause of this to be interaction between my conscious will and my physical brain. Conscious awareness has yet to be defined in scientific terms, so as yet we can't fully define the root cause of my finger hitting the key.
The interaction of human will with our physical universe remains a mystery, but it is real.
As does the interaction of God's will.
So until we can trace back the root cause of such things as rainfall, we can't determine if there was any interaction through God's will. I do not claim to know how God's will interacts with our universe, but the evidence is all around us. We are so surrounded by God's creation, but we take it all for granted.
Are light waves meant to illuminate?
Are sound waves meant to be heard?
Is the presence of oxygen and water meant to fuel life?
Is human awareness and free will meant to experience love and being loved?
or are they just unintended accidents?