All Harry was saying is that the onus is on the taxpayer to pay and
that is refered to as a voluntary system. He put what he was saying into context by comparing it to countries that automatically take the tax. It's called voluntary compliance, like paying your speeding tickets, that's voluntary compliance too but what happens if you don't? That's the single dumbest exchange I've seen in a month. With the background to this, it's not all Harry's fault, it's government wide.
This puts some better persepective to the real problem.