It is often said that television has entered a new "golden age" *, fine (I'll stick with my paper books), but one thing missing is the title theme; that piece of music that encapsulates the show's idea -- its heart and soul. The answer is academic: running times for one-hour programs now are short and a one-minute theme tune and title sequence eats into the story to be told. In addition, binge-watching is common, and having the opening theme play every 40 minutes is not needed given the context.
The common default today of using songs in dramatic television is cheap. Indeed, having at least the "Cheapo Johnny Cracker Orchestral Theme" play about would be something. Anything.
* TV addicts say that.
Originally posted as "Cheapo Johnny Cracker Orchestral Theme No." on July 4, 2018.