The writer suggests that — as a technical matter — it is feasible to eliminate taxation by simply replacing tax revenues with an equivalent quantity of printed money. This is feasible, he claims in part, because tax collections have the same inflationary effect as printing money.
To see why, consider the simple equation M = G, where M is the total quantity of money and G is the total quantity of goods. Inflation occurs when M increases in relation to G, but this can occur in two different ways. Either M can grow or G can shrink.
Printing new money causes M to grow. Taxation causes G to shrink. The inflationary effect is the same either way. Thus, it is feasible to replace taxation with money printing.
There is more to the story, but I think it might be useful to the operation of a democratic society for there to be a clear, experiential link between prices and government spending levels.