In fact this is right out of the union-busting consultant’s playbook. Do everything illegal because the punishments for doing so are basically zero.
Unfortunately the opposite happens to these workers. Union-busting tactics work, and they have become incredibly refined. Workers are scared and/or brainwashed into voting against their own interests. The days of firehoses and police dogs are over. The war is psychological now, and the companies are winning.
Always remember- everything these companies do to prevent unions is directly from the playbook of union-busting consultants. Every company hires them. They have a system that works that they sell to these corporations. Corporations will spend hundreds of millions of dollars to these consulting companies to prevent unionization.