Reducing taxes for the poor and increasing them for the wealthy has got to be a good thing, surely? To be wealthy is a priveledge, you should expect that it won't come for free. The money to operate the state should come more from those who can afford it.
As for green taxes this a drastically needed.
"One dilemma they face here is that the more successful environmental taxes are in getting people to pollute less and getting people to drive less, obviously the less revenue you get in,"
which is surely the whole point? Taxes keep changing as the country changes. If you start getting less revenue in because the taxes are successful then you have to readdress the balance from elsewhere, but that means the taxes were successful which is the main thing!