There has been some uncertainty about ultimate authorship, but consensus seems to have formed that it was Gerson's largely, especially given his theological framework. Regardless, the point remains that Gerson himself was a major contributor to the rhetoric used by George Bush that Civilta links with the "ecumenism of hate" it criticizes. On that basis, I think it is a weakness of the article that it doesn't recognize that Gerson's worldview is precisely what causes him to be such a trenchant critic of Trump (not to mention engage other activities such as Bush's work on AIDS with Bono in Africa). There are other examples that could be mentioned as counterpoints: Dr. Russell Moore of the Southern Baptist Convention comes to mind.