In historical serial music there is certainly a leftover of human interaction with the compositional rule system, so in practice it resembles more to a chaotic

In historical serial music there is certainly a leftover of human interaction with the compositional rule system, so in practice it resembles more to a chaotic attractor than complete noise, i agree. The core conceptual idea of serial music is however the inevitable disembodyment of historic human music into pure structural sound patterns beyond history and beyond (historic) emotions.