Giving the media the benefit of the doubt, which I think stretches credibility, I don’t think it’d matter even if it was fully explained.
There is a significant portion of the population who don’t want taxes raised, even if proposals like the Greens’ leave them no worse off than before. Some of it is the “temporarily embarrassed millionaire” mindset but I think mostly it’s that they don’t trust the government to actually use the revenue in way that materially addresses poverty.
Rising inequality is undoubtedly the cause of most of our current social issues and that really needs to be main talking point. All the policies of the other major parties are ambulances at the bottom of the cliff. The Greens at least appear to have a plan to fence it off to prevent harm in the first place.