As far as i can see no "official" report has even mentioned that him being gay has anything to do with it. Granted, i'm not following it as closely as you are, i actually only read the article you posted. Seems from that no one has labeled it as a hate crime of any type.
A tragedy indeed, but lets not jump to him dying due to being gay.
"There is no greater tyranny than that which is perpetrated under the shield of the law and in the name of justice. -Charles de Secondat"