I don't think anyone says high income earners don't deserve their high salaries? Just that a family income at 160/170k a year (which is the cut off I think) shouldn't need rebates when the poor are told to stand on their own feet.
I for one say good on the high income earners. My issue is that many of these households simply don't need these tax funded perks. If we are going to be about economic rationalism, lets fund what is needed. Education, roads, health. Not giving high income families money for PHI.