"Silent people" like to deceive themselves, claiming that they are silent because they are bored of communicating, or people don't suit them, or "I like to be introspective." In reality, as soon as they unintentionally join a conversation, their great intelligence and subtle emotional qualities won't allow them to maintain the conversation; silent people will remain silent, not knowing what to say, or they will awkwardly bring up the weather or school, like distant relatives who don't know what to ask the growing boy, except whether he is doing well in school.
Can this be called stupidity? Lack of intelligence? Certainly not intelligence or aristocratic boredom.
If we talk about the wit of boors, I see such a connection: if a person is communicative and witty from birth, then they are more strongly influenced by the surrounding society and strive to merge with it in order not to fall behind life. That is, the environment is responsible for the content. But what if it promotes "boorish" values? That's what we get. Thus:
Boorishness is not a personal problem, but a cultural and historical one.
I believe that the person himself is not to blame; anyone can be corrected if they are instilled with higher cultural values. And if this happens, "witty" people achieve great success. As for the "silent ones," they are less susceptible to social influence and adhere to more conservative values, so due to the mismatch of this layer, there is a misunderstanding among peers, and misunderstanding breeds shyness, etc.
But, like everyone else, the silent ones must have their own advantages, although it is difficult to say what they are.... well, perhaps intelligence and skill. But still, their progress in modern society is practically impossible. Therefore, it is necessary to strive to "keep up with the times" if you want to succeed in life; otherwise, there is no other way.
What? A psychotype is a combination of four Latin letters, if that's what you mean. And its description often hits the nail on the head.
There may be a boorish thug, a saleswoman, and the daughter of a president with the same psychotype, but this does not mean that they behave the same way, and it is very difficult to describe them "in the same way." It's just that, for example, their type has developed business logic (that is, making a profit), and then each of these people finds the best way to make a profit: the thug robs people of their mobile phones, the saleswoman raises prices, and the daughter of the president... well, I think she would advise her father on a solution to increase the country's income, because the priority of values is higher here.

За всем следят машины благодати и любви.