There is a cultural loophole being exploited. In Japan, there is a common feeling that dreams are dreams and reality is reality; not being able to tell the difference is a sign of mental illness. Because of this, there is no filter on what you can create imaginary stories about, because it is imaginary; it is a temporary escape into fantasy like a daydream, and is not dangerous.

In many countries, dreams are not viewed this way. Dreams are things that you follow, or bring into reality, and that is a sign of achievement rather than a sign that something is wrong. Because of this, there are some things that are usually considered off-limits for fantasy, because of the risk of inspiring copycats in reality.

So when you put the media of a "dreams are just dreams" culture in front of consumers of a "dreams are for following" fanbase, now there are complications.

Hopefully not to imply that one attitude or another is the best here; there are some dreams in Japan that would probably improve the happiness of people if they were followed.