Red_Avatar: I've seen quite a few papers (research papers) on it being a graphic designer and a recurring theme is how writing and style tends to improve with time - but that's not as much creativity as it is inspiration. If you, however, look at original creative works, it's done by younger writers while older writers tend to come up with very polished and deep works but I think people confuse the meaning of creativity if they link the quality of the work with the originality and creativity.
I firmly believe that the older we get, the more our brain settles in existing ideas and how harder it is to break free from the mold. The problem is, that we lack experience and for such things such as writing, experience has a far greater impact than, say, when creating a game 30 years ago. Modern gaming requires a lot of skill and experience PLUS originality so you really need someone in their 30s or maybe early 40s who's been in the industry for at least a dozen years and is quite talented.
It may be true, but I think that most games don't break the mold, and in particular the selling point of most big Kickstarter projects is that they're in the same mold as the old games. An older, more experienced creators should be able to create a well crafted game that would take the older mold to a new level.
And frankly, most young game creators never break the mold either. When they do, they rarely get funded, because most people want familiar gameplay. "This is like a game from 20 years ago" is a major selling point of many games.