This is false. According to the Income Tax department's own admission, it could only get ~1100 people to pay such a penalty between April and November 2017. I've cited a source for this in another reply to you above.
Most people with black money exchanged their currency notes at a 10% to 20% cost via services that laundered via corrupt employees at banks or routing through newly opened accounts of poor people.
Most people with black money exchanged their currency notes at a 10% to 20% cost via services that laundered via corrupt employees at banks or routing through newly opened accounts of poor people.