It is the reason, for example, I cannot appreciate some kinds of "art Photography" from 60´s and 70´s. Almost all are crappy to me despite I read eventually some of them been purchased for hundreds thousands dollars! Certainly I am aware it is due to my ignorance on the used language (its vocabulary and syntax).
Of course, exactly as "natural communication language", several Photographic languages or Photographic Aesthetics can co-exist simultaneously in different niches but there is always a main stream where most of people will ship.
If you have a particular Photographic market to work on, your success will depend of your creativeness to deal with the elements the Aesthetics your target customers have to Photography and to maintain close follow up for the tendencies and changes in this Aesthetics.
I am not aware the actual modern tendencies changing the current language, but I am absolute sure the language is changing.