The isolation rules are in place because through the National cabinet which is chaired by the PM all states agreed to accept advice from the Australian health protection agency, also a commonwealth body. Each state puts in the rules because they have the legislative power, but the advice that Dimma was referring to is National advice from that Committee , it has nothing to do with Labor or Liberal or whether you happen to support Daniel Andrews or not.
Your comment is fanciful and based on a premise that is not true