Where? I've never said the supernatural cannot exist. I've only said that science should ignore the supernatural, that it should not claim religious or philosophical "truth." I do believe that is pretty much methodological naturalism.
You are confusing philosophical naturalism with metaphysical naturalism. They are not the same thing. That's what I wish you would understand.
Abiogenesis is philosophical naturalism, evolution is philosophical naturalism, big bang is philosophical naturalism, even heliocentrism is philosophical naturalism.
You don't really understand how much in science is philosophical naturalism.