When listing high-immigration bias at ABC and SBS, we tend to forget the many ABC shows now aimed at the younger demographic (where the ABC had been losing audience dramatically). The ABC have hired a lot of youngish talented comedians out of the vast pool of stand-up comedy talent among young Australians. It’s mostly smart-arse stuff without much pretence to news value, but there are some shows like The Chaser and Planet America that hybridise comedic style with serious debate on current affairs. These are in effect part of the ABC News stable, and their biases matter more.
The problem is that the ABC seems to have selected its comedians for having the right political and social views. One reason these comic shows seem a bit dull, especially to anyone over 30, is that there seems to be almost no difference of opinion or political stance among these comedians. Think how much more interesting it would be if the comedians on these panels actually had different points of view, instead of merely having different comedic styles!