I reckon it’s because no one actually monitors the channels that closely. If it’s not showing black, then it’s working. Any problems other than that like watermarks or incorrect promos slip through the centralised system. And without a decent social media presence, any feedback from viewers falls on deaf ears.
I forgot to mention Gold in WA has been fixed. It was like this from end of October to about a weeks ago last time I checked. How does a channel showing all-grey slip through? I know no one watches Gold anyway, so the feedback component probably doesn’t factor in. But it proves they simply have no idea what’s being broadcast on their own bloody channels.