I just came across this piece and was wondering what historians in general think of Hamilton's letters to Laurens. http://www.queerty.com/was-founding-father-alexander-hamilton-bisexual-his-letters-suggest-so-20140704
Am reading Ron Chernow's "Alexander Hamilton" currently, and as in your linked article, he presents the facts and adds a bit of context and makes the same conclusion as your linked article does: "Of course, we’ll probably never know for sure. ".