Such control hampers innovation by keeping concepts down that are outside the ruling paradigm. This not only includes Creation Science and Intelligent Design but alternative totally naturalistic concepts as well. There are areas where progress occurs only because older influential scientists die and are replaced by younger more receptive scientists. It has been said that scientific progress occurs one funeral at a time.
This is not conspiratorial but just people protecting their power and world view. However the result is the same. This actually happens in all fields of human endeavor such as science, religion, politics, business, and education. It is a result of human nature.