Well, Morgan is above all pretty much as left-wing as can be (which is obvious in all of his prose). And heroic fantasy is mostly libertarian dream come true - the strong male character who takes anything he wants, sometimes with overt critique of modern, degenerate (and, as is understood - effeminate) society. Think Conan and the like. So I took "Steel Remains" as a direct contradiction of that vision. Here we have the main character who is very much a typical heroic fantasy protagonist, a strong warrior, war hero - and gay. In addition, his society does not tolerate gay people, which makes him an outcast. I do believe this is Morgan's voice on the situation of homosexuals in our societies. Of course, in "western democracies" they do not face death penalty or imprisonment, but still there is a lot of prejudice.
(I would write more but for some reason my English seems to fail me here and I have trouble to express myself clearly).