Of course, all things aren't equal. False messages are often funnier, scarier, easier to understand, more shocking than true messages.
And there are many more potential false messages than true ones. Nearly all of the potential best propagating messages must be false. Why then does one ever encounter a true message? Because mining the pool of potential false messages is expensive, and miners cannot tax copiers of their valuable memes^wmessages. Clearly we suffer from underproduction of falsity. To obtain the utopia where nothing is true and everything is permitted, copying novel false messages without permission must be prohibited.