They prevent you from having to join a union to work at a company. And you don’t have to pay dues either.
You can effectively benefit from the unions bargaining without supporting the union - which if enough people do that kills the union (the goal of the law).
Using 12 AM or 12 PM is useless. Midnight is both and noon is neither.
The saying “hindsight is 20/20” is stupid. 20/20 is average. As someone with better than 20/20, my hindsight would be worse than normal.