Exactly this. Personally I would dispute a computer becoming conscious, but it's inconsequential to the argument. Even if it does become conscious, that consciousnesses is not you. You haven't transferred anything. You still die, and then have a chatbot in your likeness.

For a technical issue I'd also add that this entire thing becoming increasingly absurd given advances in understanding of human biology. Discoveries like the gut-brain axis emphasize that the concept of brains in a shell is mostly naive. Your body and your brain are completely interdependent to create 'you'.

But again I think the objections around consciousness or possibility are completely inconsequential (if not also strong arguments in their own right). Even if we accept every single point and desired outcome, you still die.