Seems like you like a philosophical view called “materialism”. It’s not something that can be proven, however, and many (including prominent physicists like Schrödinger and Peierls) would disagree with it.
The idea that a fundamentally completely different entity superficially similar to a human in one respect would somehow have consciousness of a human is valid (even if far-fetched), but the burden of proof and explanation exactly why and how that would be the case is on proponents of that idea—because it’s pretty obvious why it wouldn’t be.
The idea that a fundamentally completely different entity superficially similar to a human in one respect would somehow have consciousness of a human is valid (even if far-fetched), but the burden of proof and explanation exactly why and how that would be the case is on proponents of that idea—because it’s pretty obvious why it wouldn’t be.