I can certainly imagine an electromechanical system comprised of 1) a "brain" which can grow without practical bound, exactly like data centers already do, which controls 2) a "body" which can be switched out for another at any time, to simulate physical growth. The same brain could even control multiple bodies simultaneously.

Now, I'm not going to claim this will entirely enable AGI. But the base argument of "computers can not possibly have bodies" is nonsense.