I wouldn't say he is sentenced to destitution. Wage garnishment is capped at 25% of disposable income. And you keep a minimum of 217.5 per week (30 hours of minimum wage a week).
A 25% pay cut certainly hurts but depending on his income he could still have a decent life.
The amount is ridiculous but even a more reasonable sentence around 500k-5mil would probably not change anything for his situation. Most people wouldn't pay that off in their lifetime at 25% of income.