While quantum computers can be simulated classically, you can’t have the simulated state of a simulated quantum computer, be entangled with something outside of

While quantum computers can be simulated classically, you can’t have the simulated state of a simulated quantum computer, be entangled with something outside of the classical computer doing the simulating, while a quantum computer could have qubits entangled with something outside of the quantum computer. So, if that was somehow important, then the “you can simulate the quantum computer classically (at the cost of exponential slowdown)” point wouldn’t handle that kind of thing. But, it seems rather unlikely to me that we’ll find any significant evidence of that kind of thing being important for intelligence.