>The onus is on those making extraordinary claims (that a computer program is conscious) to provide evidence for it.
By saying that a computer program is not conscious you are also making an extraordinary claim. You would have to hold an agnostic position until there is a test for consciousness.
You are relying on intuitive obviousness and rhetoric to make the opposing side look ridiculous "how could a TOASTER be conscious, preposterous!", you aren't making a actual positive argument for your view.