My take on Hickey and Boggs is simply that it depicts two men in a line of work that leads them to seedy situations and other people that are as dysfunctional in life as they are. Nothing good comes out of the world they live in, in the form of relationships, work or life in general - and the language simply reflects their frustration with the misery of that reality.
I don't see any Bromance there at all, but that seems to be a popular (and overused) tag to stick on shows these days.I know on littlejoy's now defunct channel on youtube, a viewer left a little mini review for Broken Ballad that referred to Adam and Ed Payson's friendship as Bromance. Apparently they thought the scene where Adam listens to Ed sing was romantic and because Billy kills Ed over Sally, somehow came to the conlusion that the episode depicted Sally and women in general as troublemakers.Now how he or she came to any of those concusions after watching that episode I don't know. But I guess it does show how people can watch the same show and see totally different things.