Gregory
I think that I entirely agree with you, and I think (other than in the lingusitic sense) so does Steve. I mentioned this discussion to my wife who is a linguist and she basically agreed with you about the use of terms evolution and evolutionism, so (since she is always right) I hereby withdraw my comment regarding my unfortunate use of the word “unfortunate”.
The example she gave me was the difference between Islam and Islamist. In fact it might be interesting to consider coining a term like Christianism (held by certain Christians) which in a mirror to scientism, holds that the truth of all matters is related to one’s interpretation of Christian or biblical doctrine. Christianists would include Ken Ham and the AiG crowd as an instance, or Kim Davis as another.