They are not conservatives. They call themselves that not knowing or understanding what the word means. They are regressives. They are some of the least personally conservative people in most respects. Especially in the material and monetary sense. They always want the best clothes and devices. The newest cars. They are a sham people and if they didn't do so much harm I could pity them. They are pitiful but in no way deserve pity.
The old in group thing is not just conservatives. That old thing is in play all over the world with a wide variety of names. Its Communism in the CCP. its Zionism in Palestine/israel. Its many other things in many places. It is in no way just a thing in the US. The one thing they have in common is there is some 'magical' word that shields them from their hypocrisy. Its the morally weak pretending they are morally superior while doing horrible things.