Not only stars, but also others will refuse. It's not just a question of signature. For the star, fans like him and let the star sign for himself. This is an expression of his admiration, love and support for the star.
But if you give him a blank sheet of paper, he will definitely refuse to sign it for you, because there are many things involved, especially if you take a blank sheet of paper, then the star will also consider a lot whether it will affect personal problems.
Will you sign something else in his name? Can you imitate his handwriting? Nowadays, people's personal reputation is very important, not to mention that stars are particularly afraid of negative news.
Then, if your name is used by some people with other ideas to do other things because you signed a blank sheet of paper for your fans, it will be a hundred schools of thought. After all, it is your signature, and the star will naturally refuse.
The same is true for us ordinary people. If someone takes a blank piece of paper and asks you to write your name, it is also unconventional, including when we rent a house, we should only write the lease on the front and back of our ID card. This is a matter of safeguarding our personal rights and interests.
This is the most basic, how can a star not understand? It is a problem for a star not to refuse, and it is right to refuse.
In addition, it doesn't mean that as a star, not everyone likes him, some like him and some don't. What about some people who don't like him? If a series of other things are fabricated for him because of his signature, how can he explain it?
After all, this is a very difficult thing to deal with, so when fans ask the star to sign a piece of white paper, the star will flatly refuse. This is not a high-profile star, but that they know how to safeguard their personal rights and interests.