I think you’ve misunderstood. They’re arguing against the capitalist approach in which there was an attempt to fire and rehire employees to cheat employees and save the company money. The system which prevented the company from doing so was government intervention to protect workers, which is not a capitalist approach.
I leave on time, how is that an insult? I’d be much more insulted if someone asked me to work for them for free. That’s what unpaid overtime is.