I remember that article (sounds more like a Politico one than WaPo, TBH). It was about the social life of official Washington (like ambassadors, Cabinet- and undersecretary-level appointees, Congress critters and their chiefs of staff, etc), not your average person working in politics. It said that the Trump administration was pretty insular, and they weren't really welcome at things like the Kennedy Center Honors, WH Correspondents' Dinner, etc. They pretty much hung out at the Trump Hotel and Cafe Milano, whereas the Obama administration was out and about, hosting parties, attending events, trying new restaurants, etc.