What does "You can't eat grapes and say they are sour" mean?

The phrase "sour grapes" is usually used to ridicule those who have no real talent and are very jealous of those who are truly capable. This kind of people work in highly competitive industries, especially It's not uncommon in the entertainment industry. Let's not talk about the big names and celebrities, let's talk about our treasure. Jing Boran is a young star who was favored by the well-known director Fan Xiaotian in a short period of time and was hired to star in " Jing Xiaoqiao, the male lead in "Xiang". This made some people who can't eat "grapes" start to say that the grapes are sour. All kinds of clichés are rampant, why is Jing Boran stealing other people's scenes, and why others don't bother to do comedies. Comedians, and so on. In real life, when some people see that others can get something but they can’t, they often resort to self-deception or distort reality to reduce psychological pressure and pain. This psychological reaction is a self-defensive and protective measure that can resolve and disperse the psychological trauma caused by setbacks and failures, so that the damaged psychology can be protected to a certain extent. For the time being, being stuck in the world of sour grapes for a long time will only make you jealous and perverted. It is better to face reality. Since you can't eat grapes, don't worry about whether they are sour or not. You can't eat them anyway. If you want to be sour, just "sour" others. . But it’s a bit rude for you to make others so jealous. The drama "Xiang" is about to air, and people who haven’t eaten grapes will jump out and say that the grapes are sour. People with sour grapes are now eating grapes with great enthusiasm. People who disdain acting in comedies are very good at playing small roles in comedies. Haha, let me laugh. I don’t say grapes are sweet even after I eat them. —Grapes are sour and sweet.