I'm not one to support new taxes generally, but I have to say currently flying is too cheap. Car fuel prices are taxed to hell, why should air travel - a fairly polluting business in its own right - be exempt?
IMO flying is currently too cheap if you take everything into account, sorry for everyone whose job is involved. Since a tax should apply to all airlines equally it should simply raise ticket prices a little. And it'd still be cheap if you look at the amt of fuel burned.
That said calling it a green eco tax is of course BS and they should call a cat a cat.