I'm trying to get to the bottom of this idea that they do not believe in creationism.
This is from the Watchtower 86 9/1
Questions From Readers
▪ Is there a distinction between “creation” and “creationism”?
Yes, there is. The word “creation,” appearing some 18 times in the New World Translation of the Holy Scriptures, properly refers to Jehovah’s creative activity. (See, for example, Romans 1:20; 8:21; 2 Corinthians 5:17) The term “creationism” is not found in the Bible.
Webster’s Third New International Dictionary (1971) defines “creation” as “the act of creating,” and “creationism” as “a doctrine or theory of creation.” The same dictionary defines “ism” as “a distinctive doctrine, cause, system, or theory—often used disparagingly.”
In these 1980’s, “creationism” has become a true “ism” because of its adoption by political pressure groups, such as the Moral Majority. It is no longer a neutral term, but embodies extreme fundamentalist views of the Bible, such as the view that God created the earth and everything upon it in six days of 24 hours each. There are now more than 350 books in circulation setting out such “creationism” dogma. Jehovah’s Witnesses reject the unreasonable theories of “creationism” in favor of what the Bible really teaches about “creation.”
For a more complete answer to the above question, please see the article entitled “Evolution, Creation, or Creationism—Which Do You Believe?” on pages 12-15 of our companion magazine Awake! dated March 22, 1983.
This is the Awake article that they refer to
Flaws in “Scientific Creationism”
From the testimony given in the trial, it is manifest that the scientific evidence for creation was not really presented in clear confrontation with evolution. Instead, it was lost to sight in clashes over side issues, particularly two tenets of creationism that had been written into the law:
1. That creation took place only a few thousand years ago.
2. That all geologic strata were formed by the Biblical Deluge.
Neither of these dogmas is really crucial to the central question of whether living things were created or not. They are merely doctrines held by the members of a few churches, notably the Seventh-Day Adventists, who form the core of the group that sponsored the law. When these sectarian beliefs were written into the law as something that must be taught in public schools, that law was foredoomed to be declared unconstitutional.
Wikipedia has this to say about Scientific Creationism
Creation science or scientific creationism [1] is a branch of creationism that attempts to provide scientific support for the Genesis creation narrative in the Book of Genesis and disprove or reinterpret the scientific facts, theories and scientific paradigms about the history of the Earth, cosmology and biological evolution. [2] [3] ... The main ideas in creation science are: the belief in "creation ex nihilo" (Latin: out of nothing); the conviction that the Earth was created within the last 6,000–10,000 years...
So the clowns in the writing department, in their haste to discredit others beliefs, have decided that they will deny creationism (in it's true definition) whereas in reality they simply do not believe in the creationism branch of Scientific Creationism.