Last time I checked, Unions were legal. For that matter not liking a company is legal too. Not wanting to work for someone, also legal. My friend not wanting to work for someone I don't like, also legal. Not liking a companies policies, ummm also legal.

His point is that you would get sued anyway to intimidate you.

The people suing you have more money than you and lots to lose. They would just try to drag you into an expensive and endless legal battle hoping you could not afford it.