If there is a basis for thinking that Abp. Chaput wants to return to a "Constantine-imposed Christendom," it is not evident in what you wrote.  Don't fell bad, though, the Civilta Cattolica far outdoes you with its outlandish statement that Catholic conservatives and Christian fundamentalists espouse Manicheism.  Among many other things, Manicheism doesn't assert literal belief in Genesis, or even an all-powerful god.  But it does help to further modern Jesuits' disdain for conservatives to call us Manicheists.  An old-line Jesuit would never have been so rhetorically challenged.  How far they have fallen.