This is kind of the tl;dr 30-second elevator version of it.
Hegel's Dialectic is at its simplest the belief in a positive idea (the thesis), a competing negative or contradictory idea (the antithesis), and the end result, a new concept that nullifies and replaces both the thesis and antithesis, the synthesis.
Social Marxists, cultural anthropologists, and other leftist thinkers have loved to rely on the Hegelian dialectic to attack Western thought for many years. Edward Said (a literature professor) wrote the famous book "Orientalism" that basically says everything that Westerners believe about the Middle East is pure fantasy, wish fulfillment, the Other; that which the West is not. The West is civilized, therefore the East is savage. Western women are chaste and virtuous, therefore Eastern women are sultry whores (harem fantasy). Western men are honorable, Eastern men are untrustworthy, etc. Said, incidentally, just built his book on the prior work of everyone's famous pedophile, Foucault.
Ok, getting to the point.
Today, why do leftists of all stripes love drag queen toddler time? Why do they love kids burlesque shows? To reference a post from today, why do leftists NPCs love cities and hate suburbs.
Thesis. Antithesis.
The left today is defined entirely by what the right is NOT. To be more accurate, the left today defines itself in opposition to their perverse imaginary view of what the right is.
The left believes the right is Christian, therefore the left exults in atheism, satanism, Islam, etc--anything that is NOT Christian.
The left believes the right is ignorant rural and suburban dwellers, therefore the left is modern and urban--anything that is NOT rural.
The left believes that the right requires strict gender roles and rules, therefore the left wants to tear down the very concept of gender.
The left believes that the right wants to kill all gay people, therefore the left wants to groom more children to be gay.
Edit to add: The left believes the right is irredeemably racist and white, therefore the left exults and honors anyone non-white over anyone white.
Edit to add: The left believes the right is male-dominated and patriarchal, therefore the left attacks anything masculine and praises the feminine.
Some of these points are a bit (but only a bit) exaggerated, but the point is that the modern left is an entirely intellectually bankrupt movement. It is a negative. It can only define itself as the opposite of the right.
I would agree, but I have degrees in cultural anthropology, and have witnessed first hand how academia treats things. The left views the Other by it's stereotype of other. They want Said to remain Oriental even when he proves his culture is nothing like that.
I'll give an example. Hawaii has two major cultures in it. One is the Pidgen culture of a melting pot. Almost every food, idea, and modern use of Hawaii comes from that culture. The native Hawaiians have their own culture, and have been working to rebuild it. However, all attempts to modernize it meet academics who want the culture to remain 'pure'. We can't imagine a native Hawaiian sci Fi, because that would be against the culture. Literally the belief is modernism will die, and the Hawaiians will go back to how they were beforehand.
This is ironic because none of the same native Hawaiian academics, the kind that complain about Moana not being accurate enough, can live without the latest iPhone. They want to sail the old ships, using traditional methods, but post on Twitter at the same time.
The other must be other to remain pure. Said was very critical about this in academia. The academics used his statements to prove themselves right against him. I honestly don't know if he caught on to what was happening.
So black people must be crude, because they are other. Poor people, rednecks, are other because they are unable to get onto the internet. Even though this can be disproven, the people in charge believe this to be true. I can text my activities from a reservation, and chat in that language to friends, but the academic, or people in charge, truly believe I can't. I knew a guy int he middle of nowhere Navajo Land, who could speak Chinese because he watched so much Jackie Chan. This guy used relays to get the internet and download the movies. There are tons of folks like that, but if I bring them up in academic circles, no one believes me.
It's not a dialect, it's a leadership unable to get beyond their 50 year old ideas of how things work.