Earlier quoted context omitted.
We can't replicate something we don't understand. The mechanism for consciousness is not understood at all right now and could actually be based on quantum effects that we haven't detected yet. It's also possible that it is only achievable in an organic machine. Until we understand how consciousness actually arises, the best we can do is a simulacrum of it.
Why not? I can replicate a book in a foreign without understanding the language?
we don't understand what consciousness is or how it is achieved, so discussing how to recreate it isn't really a conversation we can have - we can only discuss how to create a simulacrum.