Writing detective stories is about writing light literature, for entertainment. It isn't primarily a question of writing propaganda or classical literature.
Due to the political nature of film, partisan film making, especially where the subject is close to the film makers hart, tend to be the norm, rather than the exception.
However, the radio and national media depend much more on the hype from a good record label, and from a ' buzz ' about a band, then from just one or two good shows. There are a lot of artists that have a ton of good press going for them, and still do not make it big in the US.

