The Establishment's worst traits - the self-regard, the group think, the obsessions with trivia, the worship of credentials, the virtue signaling, the imperiousness, the ignorance of perspectives and people

Hmmm. From Trump Short Circuits Washington by Matthew Continetti.

The same forces that opposed Trump during the Republican primary and general election are trying to break his presidency before it is a month old. At issue is the philosophy of nation-state populism that drove his insurgent campaign. It is so at variance with the ideologies of conservatism and liberalism predominant in the capital that Washington is experiencing something like an allergic reaction. Nation-state populism diverges from Beltway conservatism on trade, immigration, entitlements, and infrastructure, and from liberalism on sovereignty, nationalism, identity politics, and political correctness. Its combative style and heightened rhetoric offend the sensibilities of career-minded Washingtonians of both parties, who are schooled in deference, diplomacy, being nice to teacher, and the ancient arts of CYA.

[snip]

So unlikely did the election of Donald Trump seem to Washington and its denizens that the reality of it still has not sunk in. All of the city's worst traits—the self-regard, the group think, the obsessions with trivia, the worship of credentials, the virtue signaling, the imperiousness, the ignorance of perspectives and people from outside major metropolitan centers and college towns—not only persist. They have been magnified with Trump's arrival. There is so much negative energy coursing through the city that circuits are overloaded. That the president still draws support from the coalition that brought him to office, that a fair number of people see his policies as commonsensical, seems not to affect any of Trump's critics in the least. They will press on until Trump behaves like they want him to behave.

I think he's right. His description matches the behaviors we are seeing.