In this very interesting video Tom Nicholas describes the transition from modernism to post-modernism to a new thing called metamodernism.
One thing he points out is that post-modernist political parties of all stripes avoided having actual stances and thought just playing the part of a politician - wear suits, use the right hand gestures, say the right words - was enough to get elected.
This is almost exactly what Schumer is doing here. As a post-modernist politician he can create his own reality and ignore actual facts.
One thing I liked about Kbin was that I didn’t upvote my own post. All my votes were earned.