I could see it being the case if the person believes that at its core, our own human sentience IS really just advanced matrix multiplication (or other purely ma

I could see it being the case if the person believes that at its core, our own human sentience IS really just advanced matrix multiplication (or other purely material processes, i.e. we're all just fleshy mainframes). So, such a person might conclude that with sufficiently advanced matrix multiplication and other similar functions, any entity could achieve the same sort of sentience as us.