That's extremely provincial and 19th century view of the matter.

In modern art all kinds of artists including photographers give creative control to random elements and processes.

It's the setup they built and the creative concept behind it that defines their artwork, not the details like "composition/timing" which they can leave to chance, others, etc. (Yes, in some works even "composition" and "subject matter captured" can be detail left to chance -- this is often the case in e.g. generational music and painting, where the artist just sets up the general framework).