"Rather, it is an example of yet another Banker finding reasons to screw ordinary people"
Unfortunately, when it comes to taxation governments are all too keen to listen to "bright ideas" from financiers. A few centuries back, when English taxation was raised from 6d to a shilling in the pound (2.5% to 5%) to pay for a war, there were riots and the change had to be abandoned. Now, on average, we pay rather more than half our salaries to government throughout our working lives. Nevertheless, this doesn't seem to be enough to keep public services running smoothly and sufficiently. I suspect there's a lot of wastage, just as there is in food production.