Yes, I agree. If scientists could demonstrate the occurrence of abiogenesis in a biological or chemical laboratory, that wouldn't disprove the existence of God. However, I think that you are still missing the point. The experiment would show what organic compounds were necessary to start the process of abiogenesis, and what sort of environment was necessary for abiogenesis to occur. The fact that scientists needed conscious intention to produce these necessary organic compounds and the appropriate environment for abiogenesis wouldn't prove that the same compounds could not be synthesised or that the same appropriate environment could not exist on the Hadean or Archean Earth without conscious intention.
It depends how you think God created life. If He created life as scientists would do it, using an assemblage of organic compounds in a laboratory, then the fact that scientists had succeeded in replicating the process would be evidence that God did it in that way. If, on the other hand, you believe that God created life supernaturally, then a scientific demonstration of abiogenesis would be irrelevant to the question and would do nothing to verify the belief or to demonstrate the process of creation. The experiment would only succeed in proving that abiogenesis can be achieved without supernatural powers.