Sometimes writers have to take what they're given early on. Looking at his IMDB he didn't create those shows, he just wrote episodes here and there.
You can tell by the movies he wrote and the shows he created and produced as real indicators of his skill or interests. Sopranos, Boardwalk Empire, Get Rich or Die Tryin, Vinyl and Wolf of Wall Street are all either period or crime related.
nah i get all that, the transition was just jarring to me