http://en.wikipedia.org/wiki/Dr_Seuss
"At the same time, an important development occurred that influenced much of Geisel's later work. In May 1954, Life magazine published a report on illiteracy among school children, which concluded that children were not learning to read because their books were boring. Accordingly[citation needed], Geisel's publisher made up a list of 348 words he felt were important and asked Geisel to cut the list to 250 words and write a book using only those words. Nine months later, Geisel, using 236 of the words given to him, completed The Cat in the Hat. This book was a tour de force[who?]—it retained the drawing style, verse rhythms, and all the imaginative power of Geisel's earlier works, but because of its simplified vocabulary could be read by beginning readers. These books achieved significant international success and they remain very popular.[citation needed]
Geisel went on to write many other children's books, both in his new simplified-vocabulary manner (sold as Beginner Books) and in his older, more elaborate style. The Beginner Books were not easy for Geisel, and reportedly[citation needed] he labored for months crafting them."
All an ENFP needs to succeed is a challenge.

Even if there was a decline in the quality of language, it would only inspire another ENFP to pick up where Dr Seuss left off.