Nine have come up with quite a number of odd consumer advice, since the December 2015 Code change where the prescribed consumer advice no longer has to be used (Seven still do).
A program may be more suited to a mature audience, even if the content doesn’t necessarily warrant it (e.g.) NCIS has never been PG in the 16 years its aired on Ten, even though many, many episodes carry no consumer advice. A number of episodes could also easily be given a PG. But the overall premise and feel isn’t really directed towards kids.
I don’t see this as an issue at all really.